How To Make Blood Draws Less Stressful for Cats

By Dr Duncan Houston

A cat’s blood draw may last only a few seconds, but the stressful part often begins long before the needle appears.

The carrier, car journey, unfamiliar smells, barking dogs, cold examination table and previous frightening experiences can all raise a cat’s fear level. By the time blood collection begins, some cats are already close to panic.

The goal should not simply be to hold the cat still. It should be to obtain a useful blood sample with the least possible fear, pain and loss of control, while protecting the cat, owner and veterinary team.

Quick Answer

Cat blood draws are usually easier when the room is quiet, all equipment is prepared in advance, the cat remains in a comfortable position and only the minimum handling required is used.

The vein should be selected for the individual cat. Treats, familiar bedding, topical local anaesthetic, pre-visit medication or sedation may help. If fear is escalating or repeated attempts are needed, the procedure should stop and the plan should change rather than simply adding more restraint. (Sage Journals)

Low-Stress Cat Blood Draws at a Glance

Question	Practical answer
Should every cat be held the same way?	No. Position and sampling site should be chosen for the individual
Is a motionless cat necessarily calm?	No. Freezing can be a fear response
Should cats be scruffed routinely?	No. Passive, minimal handling produces fewer negative responses
Which veins can be used?	Jugular, medial saphenous and cephalic veins are common options
Can the cat stay in the carrier?	Sometimes. A cephalic sample may be collected while the cat remains in the carrier base
Can treats help?	Yes, when the cat voluntarily accepts them and fasting is not required
Does classical music calm cats?	Not reliably. Cat-specific music performed better than classical music or silence in one study
Can numbing cream help?	Yes. Lidocaine-prilocaine cream reduced responses to jugular venepuncture when applied 30 minutes beforehand
Is sedation a failure?	No. It may be the safest and kindest option for a highly distressed cat
Can stress affect test results?	Yes. It can influence heart rate, breathing, blood pressure and glucose
When should the attempt stop?	When distress is escalating, safety is compromised or two attempts have failed

Why Are Blood Draws Stressful for Cats?

The needle is only one part of the experience.

A cat may already be distressed by:

• Being chased into the carrier

• Movement and noise during transport

• Dogs or unfamiliar cats nearby

• Strong cleaning-product smells

• Slippery or cold surfaces

• Sudden removal from the carrier

• Looming, staring or unfamiliar handling

• Painful joints being extended

• Tight restraint that prevents retreat

• Previous unsuccessful blood draws

One negative veterinary experience can influence how a cat responds to future visits. Tight restraint, pain or fear may teach the cat that the clinic, carrier or particular handling position predicts danger. (Sage Journals)

A Still Cat Is Not Always a Calm Cat

Some frightened cats hiss, scratch or try to escape. Others become almost completely motionless.

A frozen cat may:

• Crouch tightly

• Hold the tail close to the body

• Rotate or flatten the ears

• Avoid looking towards people

• Stop accepting food

• Remain rigid during handling

• Suddenly escalate when their tolerance is exceeded

This can be mistaken for cooperation. In reality, the cat may be using behavioural inhibition because escape no longer appears possible.

The absence of resistance does not necessarily mean the absence of fear.

Why Does Reducing Stress Matter Medically?

Veterinary visits can significantly alter a cat’s blood pressure, heart rate and respiratory rate compared with measurements taken at home. These changes may reflect transport and environmental stress rather than the cat’s underlying disease alone. (Sage Journals)

Cats can also develop stress-related hyperglycaemia. Struggling and acute arousal may temporarily raise blood glucose, potentially complicating the interpretation of a diabetic or borderline result. (PubMed Central (PMC))

Reducing distress does not guarantee that every result will be unaffected. It gives the veterinary team a better chance of interpreting findings within a calmer and more consistent clinical context.

What Can Owners Do Before the Appointment?

Keep the Carrier Available at Home

The carrier should not appear only before veterinary visits.

Leave it open with:

• Familiar bedding

• Occasional treats

• A favourite toy

• A removable top where possible

Allow the cat to sleep, explore and eat near it without closing the door every time.

Ask Whether the Cat Must Fast

Do not assume that treats will be allowed.

Before the visit, ask:

• Whether food must be withheld

• How long fasting is required

• Whether water is permitted

• Whether routine medication should still be given

• Whether a small lickable reward may be used during sampling

Never withhold essential medication unless the veterinary team specifically instructs you to do so.

Tell the Clinic What Happened Previously

Useful information includes:

• Which blood-draw site worked best

• Whether the cat accepts food at the clinic

• Whether the cat is sensitive around the head, neck or legs

• Whether arthritis or another painful condition is present

• Whether the cat has bitten, scratched or escaped

• Whether gabapentin or another pre-visit medication helped

• How long the cat remained distressed afterwards

A written handling note can save everyone from repeating a technique that has already failed.

Bring Familiar Items

Helpful items may include:

• The cat’s bed or blanket

• A familiar towel

• An approved favourite treat

• A lick mat

• The removable carrier base

• Previous laboratory results

• A list of current medication

Familiar scent and texture may help the cat remain grounded in an otherwise unfamiliar environment.

How Should the Examination Room Be Prepared?

Preparation should be completed before the cat is handled.

The room should ideally be:

• Quiet

• Secure

• Warm

• Free from unnecessary people

• Free from dogs

• Equipped with all required supplies

• Set up with a non-slip padded surface

• Protected from sudden traffic through the door

The veterinary team should avoid leaving repeatedly to collect tubes, needles, labels or clippers while the cat waits on the table.

Let the Cat Acclimatise

Some cats walk out of the carrier immediately. Others need several minutes.

Depending on the cat, the team may:

• Remove the carrier top

• Examine the cat in the carrier base

• Allow hiding beneath a loose towel

• Offer a high-sided bed

• Sit beside rather than lean over the cat

• Begin with the least threatening parts of the examination

• Allow the owner to remain nearby when this helps

Flexibility is more useful than insisting that every examination follow the same head-to-tail sequence. Cat Friendly guidelines recommend allowing the cat to choose comfortable positions and taking breaks when necessary. (Sage Journals)

Does Music Help?

Soft background sound may mask sudden clinic noises, but classical music should not be presented as a proven feline calming treatment.

In one controlled study, classical music did not reduce handling or stress scores compared with silence. Cat-specific music was associated with lower behavioural stress and handling scores, although it did not change the physiological marker measured in that study. (PubMed)

Music is optional support. It cannot compensate for forceful restraint or painful positioning.

How Should the Blood-Draw Site Be Chosen?

There is no universally best vein.

The choice depends on:

• Volume of blood required

• The cat’s size

• Visibility of the veins

• Previous experiences

• Head or limb sensitivity

• Arthritis

• Neck or dental pain

• Respiratory status

• Obesity

• The test being performed

• The experience of the blood collector

• The position the cat tolerates best

Current feline guidelines recommend selecting the venepuncture site for the individual rather than relying on one clinic default. (Sage Journals)

Jugular Vein

The jugular vein can provide a larger sample quickly and may reduce the time the needle remains in place.

It can work well when:

• Several tests are required

• A coagulation sample is needed

• Peripheral veins are difficult to access

• The cat tolerates gentle head elevation

• The cat remains comfortable in a natural sternal position

Low-stress jugular collection involves gently lifting the head without compressing the whiskers or tightly controlling the forelimbs. Hanging the legs over the edge of a table or stretching the neck excessively can cause discomfort and remove the cat’s sense of control. (Sage Journals)

Jugular sampling may be a poor choice for a cat with:

• Dental or facial pain

• Neck pain

• Cervical arthritis

• Brachycephalic airway concerns

• Strong aversion to head handling

• A condition in which jugular compression is undesirable

Medial Saphenous Vein

The medial saphenous vein lies on the inside of the hindlimb.

It may be particularly useful for:

• Cats sensitive around the head

• Cats with neck pain

• Cats with forelimb pain

• Cats with elbow arthritis

• Routine samples

• Cats that prefer to keep the chest upright

The cat can remain semilateral, with the upper half of the body in a comfortable sternal posture. The limb should be stabilised without tightly gripping joints, pumping the foot or hyperextending the hock. Full lateral restraint should not be automatic. (Sage Journals)

Cephalic Vein

The cephalic vein is located in the forelimb.

It may work well when:

• Only a modest sample is needed

• The cat accepts forelimb handling

• The cat prefers to remain sitting or standing

• The cat is comfortable in the carrier base

• The cat wants to hide their head beneath a towel

The elbow should not be hyperextended. Supporting behind the upper limb is generally more comfortable than pulling the paw forwards or tightly gripping the foot. (Sage Journals)

What Is the Best Position?

The least restrictive position that allows safe, efficient collection is usually best.

Depending on the cat, this may be:

• Standing

• Sitting

• Sternal

• Semilateral

• In the carrier base

• Against a handler’s body

• Loosely supported by a towel

• On familiar bedding

The aim is not “no restraint at all” regardless of safety. It is the minimum effective support needed for one clean attempt.

Should Cats Be Scruffed?

Routine scruffing is not recommended.

A controlled study comparing handling methods found that passive restraint produced the fewest negative behavioural and physiological responses. Full-body restraint and clip restraint produced the most, while scruffing also caused more negative responses than passive handling and was recommended to be avoided where possible. (PubMed)

Scruffing may make a cat physically still without making them emotionally comfortable. It can also create a stronger negative association with future handling.

How Should the Skin Be Prepared?

Strong odours and sudden noises can be aversive.

For ordinary venepuncture, Cat Friendly guidance recommends using dilute chlorhexidine or a similar appropriate preparation rather than alcohol-based products where clinically suitable, because alcohol has a strong smell. If clipping is required, quiet clippers should be used. (Sage Journals)

The exact preparation must still match the procedure. Blood cultures, catheter placement and other aseptic procedures may require a different protocol.

Products should be applied quietly with gauze or cotton rather than sprayed towards the cat’s face.

Can Numbing Cream Be Used?

Yes, when the blood draw is planned in advance.

A controlled study found that lidocaine-prilocaine cream applied for 30 minutes before jugular blood collection reduced stress scores and withdrawal movements. Venepuncture was also rated easier in cats receiving the local anaesthetic than in cats receiving a placebo. (Sage Journals)

Topical local anaesthetic may be especially useful for:

• Cats receiving regular blood tests

• Hospitalised cats

• Cats that withdraw sharply when the needle touches the skin

• Cats with previous painful venepuncture experiences

• Planned screening appointments

It requires preparation time and protection from licking. Clipping and an occlusive covering may themselves bother some cats, so the total plan still needs to be individualised.

Can Treats and Lick Mats Help?

Yes, but only when the cat voluntarily accepts them and food is permitted.

Food can:

• Create a positive association

• Help the cat remain in a useful position

• Reward calm behaviour

• Distract from mild sensation

• Provide a predictable ending to the procedure

Liquid treats can be particularly useful during jugular or peripheral sampling. Cat Friendly guidelines include examples of blood samples collected with minimal or no physical handling while the cat consumes a liquid reward. (Sage Journals)

When Treats Are Not Helping

Food should not be used when:

• The cat must be fasted

• The cat is nauseated

• Swallowing is unsafe

• The cat is struggling to breathe

• The cat has stopped accepting a normally irresistible reward

• The food is being used to lure the cat into handling they cannot escape

A cat refusing a favourite treat is giving useful information. Their fear may already be too intense for food to function as reinforcement.

How Much Restraint Is Too Much?

The best restraint is not the firmest hold the team can successfully maintain.

Signs that the current approach is becoming too restrictive include:

• Increasing body tension

• Repeated attempts to withdraw a limb

• Flattened ears

• Rapid tail movement

• Refusal of food

• Growling

• Hissing

• Forceful escape attempts

• Biting

• Open-mouth breathing

At this point, the correct response is not automatically to add another person.

In most cases, only one or two skilled team members should be needed. Current guidance recommends stopping after two unsuccessful attempts, asking another experienced person to try and reconsidering the entire approach if collection remains unsuccessful. (Sage Journals)

When Should the Blood Draw Pause or Stop?

The Cat Is Coping

The cat:

• Maintains a loose posture

• Accepts treats

• Sits or lies naturally

• Permits brief touch

• Recovers immediately after handling

What to do: Continue quietly with minimal handling and a prepared team.

The Cat Is Approaching Their Threshold

The cat:

• Crouches tightly

• Stops eating

• Rotates the ears sideways

• Holds the tail firmly against the body

• Repeatedly withdraws the leg

• Attempts to hide

• Becomes increasingly still

What to do: Pause and change the position, site, handler, room setup or reward. Consider local anaesthetic or pre-visit medication if the procedure can wait.

The Cat Is Highly Distressed

The cat:

• Growls or hisses

• Strikes

• Bites

• Attempts forceful escape

• Cannot settle after a pause

• Has already experienced failed attempts

What to do: Stop conscious restraint. Consider anxiolysis, sedation or rescheduling when the test is not immediately urgent.

The Cat Is Medically Critical

The cat has:

• Open-mouth breathing

• Blue, grey or very pale gums

• Collapse

• A seizure

• Severe weakness

• Major bleeding

• Minimal responsiveness

What to do: The priority is emergency stabilisation, not routine behaviour management. Sampling may need to occur with oxygen, minimal handling and carefully selected sedation.

Can Pre-Visit Medication Help?

Yes.

Gabapentin is commonly prescribed before travel and veterinary visits for cats with predictable fear or aggression. Controlled research has found that a single pre-appointment dose can reduce owner- and veterinarian-assessed stress and aggression and improve handling during the veterinary visit. (PubMed)

It may be considered when a cat has:

• Severe carrier or car stress

• Previous difficult blood draws

• A history of biting or scratching

• Chronic disease requiring frequent testing

• Pain that lowers handling tolerance

• Repeated failed conscious procedures

Medication must be prescribed for the individual cat. Age, kidney function, concurrent medication and the timing of the appointment all matter.

Can Gabapentin Affect Test Results?

It can affect some clinical measurements.

A 2024 study found that gabapentin reduced measured arterial blood pressure in both healthy cats and cats with chronic kidney disease. The veterinary team should therefore record the dose and administration time when blood-pressure assessment is important. (PubMed Central (PMC))

Gabapentin can make outward behaviour quieter without guaranteeing that every physiological stress response has disappeared. One study found lower owner-observed stress but no significant reduction in measured glucose or cortisol during a demanding diagnostic procedure. (Sage Journals)

The practical conclusion is not to avoid gabapentin. It is to interpret results with the medication history in mind.

Is Sedation Excessive for a Blood Test?

No.

Sedation may be the safest and most compassionate option when:

• The cat is panicking

• Biting or scratching is likely

• The required sample is urgent

• Several procedures are needed

• Painful disease is present

• Previous attempts have failed

• More restraint would be necessary

• A repeat visit would cause greater distress

Sedating a protective cat can reduce future distress and improve human safety. Cat Friendly guidelines specifically support chemical restraint when needed rather than escalating physical force. (Sage Journals)

Sedation has potential risks and may alter some measurements. The veterinarian must choose the protocol according to the cat’s age, disease, circulation, respiratory status and required testing.

What Else Can Make a Cat Resist a Blood Draw?

Not every struggling cat is primarily frightened.

Pain

Possible painful conditions include:

• Arthritis

• Neck or back pain

• Dental disease

• Ear disease

• Skin inflammation

• Wounds

• Abdominal pain

• Recent surgery

• Limb injury

• Cancer

A cat with elbow arthritis may strongly resist cephalic sampling but tolerate medial saphenous collection. A cat with dental or neck pain may find jugular positioning particularly uncomfortable. (Sage Journals)

Respiratory Distress

A breathless cat may resist because restraint interferes with the position they need to breathe.

Do not force a dyspnoeic cat into lateral recumbency simply to obtain a routine sample. Stabilisation and oxygen may need to come first.

Weakness or Hypoglycaemia

A motionless cat may be weak rather than relaxed.

Kittens, diabetic cats and critically ill patients may need immediate glucose assessment and stabilisation.

Neurological Disease

Altered awareness, vestibular disease, seizures or cognitive dysfunction can make responses unpredictable.

Sensory Loss

Older cats with reduced hearing or vision may startle when touched unexpectedly. A slow, predictable approach becomes even more important.

What Should Happen After the Blood Draw?

Gentle pressure should be maintained over the sampling site until bleeding has stopped.

The cat should then be checked for:

• Continued bleeding

• Bruising

• A rapidly enlarging swelling

• Pain

• Lameness

• Coldness or discolouration of the limb

• Distress that does not settle

Cats with thrombocytopenia, clotting disorders, anticoagulant exposure or advanced liver disease may require longer compression and closer monitoring.

When Is This an Emergency?

Seek immediate veterinary attention if blood collection is followed by:

• Open-mouth breathing

• Blue or grey gums

• Collapse

• A seizure

• Severe weakness

• Uncontrolled bleeding

• A rapidly enlarging swelling at the sample site

• Severe pain

• A cold, swollen or discoloured limb after catheter placement

• Minimal responsiveness

Apply gentle continuous pressure to an actively bleeding site while contacting the veterinary team. Do not repeatedly release pressure to check whether bleeding has stopped.

What To Do if Your Cat Hates Blood Tests

1. Contact the Clinic Before Booking

Explain that your cat becomes highly distressed.

Ask about:

• A quiet appointment time

• Direct admission to an examination room

• An experienced feline handler

• Extra appointment time

• Pre-visit medication

• Topical local anaesthetic

• A planned sedation option

2. Confirm Whether Fasting Is Required

Ask whether treats, lickable food or regular medication are permitted.

3. Prepare the Carrier Early

Keep it accessible at home and use familiar bedding.

4. Bring a Behaviour History

Include:

• Previous reactions

• Successful positions

• Preferred blood-draw site

• Food preferences

• Painful areas

• Medication response

• Known triggers

5. Tell the Team What Medication Was Given

Record the exact dose and time.

6. Agree on a Stop Point

It is reasonable to discuss changing the plan if attempts are failing or distress is escalating.

7. Record What Worked

After the visit, document:

• Which vein was used

• The position

• Whether the cat remained in the carrier

• Which treat worked

• Whether local anaesthetic was used

• Which team members handled the cat

• Whether medication or sedation was needed

This creates an individual handling plan for the next appointment.

Can Cats Be Trained To Cooperate With Blood Draws?

Yes.

Cooperative-care training can teach a cat to:

• Go to a mat

• Enter the carrier

• Rest the chin on a hand or surface

• Offer a forelimb

• Accept brief neck or leg touch

• Tolerate fur separation

• Remain still briefly

• Hear clippers without panicking

• Accept gentle pressure over a vein

Positive-reinforcement training can reduce the need for physical restraint and give the cat a predictable way to participate. (catvets.com)

A Simple Home Training Plan

Step 1: Choose a Station

Use a familiar mat, towel or carrier base.

Reward the cat for approaching or standing on it.

Step 2: Introduce Brief Touch

Touch the shoulder or cheek for one second, then reward.

Stop before the cat withdraws.

Step 3: Build Duration Slowly

Increase from one second to two, then three.

Do not increase pressure, duration and difficulty at the same time.

Step 4: Practise Procedure Elements

Gradually introduce:

• Brief head elevation

• Gentle forelimb presentation

• Hindlimb touch

• Cool damp gauze

• Quiet clipper sounds

• Light pressure over the vein

Step 5: Add a Second Person

Once the cat is comfortable, have another familiar person briefly participate.

Step 6: Keep Sessions Short

One to three minutes is often enough.

Finish while the cat is still relaxed and willing to continue.

Common Cat Blood-Draw Mistakes

Treating Freezing as Cooperation

A motionless cat may be frightened and inhibited rather than calm.

Using the Same Vein for Every Cat

The most familiar site for the veterinary team may not be the best site for the patient.

Forcing Full Lateral Restraint

Many cats cope better standing, sitting, sternal, semilateral or in the carrier base.

Scruffing Routinely

Scruffing can increase aversion and does not create genuine emotional safety.

Making Too Many Attempts

Repeated needle placement increases pain, bruising and negative learning.

Assuming Classical Music Will Calm Every Cat

Cat-specific music has better evidence, and silence may be preferable for some individuals.

Using Food Despite Required Fasting

Always confirm whether food is permitted.

Refusing Sedation Because It Feels Excessive

Sedation may be considerably kinder than several people holding down a terrified cat.

Giving Gabapentin Without Telling the Clinic

Medication may affect sedation, coordination and blood-pressure interpretation.

Ignoring Pain

A handling problem may actually be an arthritis, dental, neck or abdominal pain problem.

How Can Future Blood Draws Be Easier?

• Keep the carrier available at home.

• Practise cooperative handling.

• Treat pain appropriately.

• Book quiet appointments.

• Use the same successful team where possible.

• Record the preferred position and vein.

• Use topical anaesthetic for planned repeated sampling.

• Bring familiar bedding.

• Use rewards the cat genuinely values.

• Limit attempts.

• Consider pre-visit medication early.

• Use sedation when safety or welfare justifies it.

• Combine necessary tests to reduce repeat handling.

• Avoid unnecessary blood draws.

The objective is not only to obtain today’s sample. It is to protect the cat’s ability to receive medical care throughout their life.

Frequently Asked Questions

Does a blood draw hurt a cat?

The needle causes brief discomfort, but restraint, fear and painful positioning may be more distressing than the puncture itself. Topical local anaesthetic and skilled technique can reduce the response.

Which vein is best for drawing blood from a cat?

There is no universally best vein. The jugular, medial saphenous or cephalic vein may be selected according to sample volume, anatomy, pain, behaviour and the position the cat tolerates.

Is gabapentin safe before a cat’s blood test?

Gabapentin is commonly used under veterinary direction and has evidence for reducing behavioural signs of stress. It may cause sedation, wobbliness and lower measured blood pressure, so the clinic must know that it was given. (PubMed)

Should I stay with my cat during the blood draw?

Some cats feel safer with their owner present. Others become more aroused, attempt to reach them or respond better with a small experienced team. The decision should be based on the individual cat rather than a fixed clinic rule.

Is sedation dangerous for a routine blood test?

Sedation carries risks, but severe fear, struggling and heavy restraint also carry risks. The veterinarian should compare these options and select the safest plan for the cat’s health, urgency and required procedure.

Final Thoughts

A successful feline blood draw is not defined only by whether blood entered the syringe.

The most important points are:

1. The cat’s emotional state matters before handling begins.

2. Freezing does not necessarily mean the cat is calm.

3. Stress can influence vital signs and laboratory interpretation.

4. The sampling site should be chosen for the individual.

5. Cats should remain in a natural, comfortable position where possible.

6. Passive, minimal handling is preferable to full-body restraint.

7. Scruffing should not be routine.

8. Repeated attempts increase pain and future fear.

9. Treats help only when the cat chooses to eat and food is permitted.

10. Lidocaine-prilocaine cream can reduce reactions when applied in advance.

11. Cat-specific music may help some cats, but classical music is not reliably better than silence.

12. Pre-visit medication and sedation are legitimate welfare tools.

13. Medication history must be considered when interpreting blood pressure and other findings.

14. Cooperative-care training can improve repeated procedures.

15. The procedure should stop when fear and danger are escalating.

The mistake that causes the greatest harm is focusing only on controlling movement.

The better question is what this individual cat needs to remain safe enough for the sample to be collected without unnecessary fear or force.

---

ASK A VET™ can help you prepare questions for your clinic, organise pre-visit medication instructions and track which handling techniques work best for your cat. A cat with open-mouth breathing, collapse, severe weakness, uncontrolled bleeding or rapidly worsening distress still requires immediate hands-on veterinary care.