What supplies does a diabetic dog or cat need?

Insulin and syringes come from your vet. Everything else is bought by the owner: a glucose meter and its matching test strips, lancets, a lancing device, ketone test strips, a sharps bin, and for cats a suitable low-carbohydrate food. Test strips and lancets are the items that run out most often.

How often do diabetic pet test strips run out?

It depends how often your vet asks you to test. An owner doing a reading most days will typically reorder strips monthly; someone doing an occasional curve will go much longer. Strips also expire, so buying a very large quantity to save money can waste some of it.

Are glucose test strips interchangeable between meters?

No. Test strips are specific to the meter they are made for and cannot be swapped between brands. Check the model name on your meter before ordering. This is also why the meter you start on matters - it decides which strips you are buying for the rest of your pet’s life.

Supplies

What you will keep running out of

Insulin and syringes come from your vet. Everything below you buy yourself, again and again, for as long as your pet is diabetic. This page is for the fortieth reorder rather than the first.

Reordering strips for the meter you already have

Strips are meter-specific and are not interchangeable between brands, so a general search for test strips is the wrong shelf. Tell us which meter you are already using and we will point at the right one. We will not tell you which meter to buy — that is a clinical choice, and it belongs with your vet.

Which meter do you already use?

When will you run out?

Arithmetic, not advice. Use the number of checks your veterinary team has asked you to do — this works out when the box empties, not how often your pet should be tested.

Strips leftChecks per dayStrips per box

The reorder list

These links are searches, not vetted products.

Each button runs an Amazon UK search for the item described. We have not tested the results, and a search cannot confirm that a strip fits your meter, that a food hits a carbohydrate target, or that a syrup contains no xylitol. Check the specifics on the listing before you buy — the note on each card says what to check.

Blood glucose test strips

Depends how often you test

The ongoing cost of home monitoring

+ The item you will reorder most often
+ Buying a larger box usually costs less per strip
Limit: Strips are meter-specific and are not interchangeable between brands
Limit: They expire, and an expired strip can read inaccurately - check the date before bulk-buying

Strips must match your meter exactly. Check the model name on your meter before ordering, not the look of the packaging.

Ask your vet: Ask how often your pet should be tested, which decides how many you actually need.

Check strips for your meter on AmazonCheck whether Subscribe & Save is offered

Lancets

Depends how often you test

Taking the blood sample

+ Inexpensive in boxes of 100 or 200
+ A finer gauge is more comfortable for the pet
Limit: Single-use - a blunt lancet hurts more and gives a poorer sample

Check the gauge and whether your lancing device takes a specific fitting.

Ask your vet: Ask your nurse to show you the ear or paw-pad technique on your own pet.

Check gauges and pack sizes on AmazonCheck whether Subscribe & Save is offered

Low-carbohydrate wet food for cats

Depends on your cat’s daily ration

Diet is one of the main levers in feline diabetes

+ Diet does more for a diabetic cat than it does for a diabetic dog
+ Wet food is usually easier to keep low in carbohydrate than dry
Limit: Carbohydrate is rarely printed on the label and has to be calculated
Limit: Changing food can alter how much insulin a cat needs

Aim for 5-10% carbohydrate on a dry matter basis. The 2025 iCatCare consensus figure of 25% is an upper limit, not a target.

Ask your vet: Tell your vet before you change food - the insulin dose may need reviewing with it.

Browse low-carbohydrate cat food on AmazonCheck whether Subscribe & Save is offered

Sharps bin

Replace when full

Safe disposal of used needles and lancets

+ Keeps used needles out of household bins
+ Sealed and puncture-resistant
+ Cheap, and one lasts months
Limit: Does not collect it for you - councils and vets differ on how a full bin is taken back

Any BS-marked sharps container is suitable for insulin needles and lancets. Size is the only real choice: a 1 litre bin suits most single-pet households.

Ask your vet: Ask your practice how they want a full bin returned - many take them back, and some councils will not collect them.

See sharps bins on Amazon

Ketone test strips

Lasts months unless you are testing often

Checking for ketones at home

+ Cheap, and the single most useful thing to have in the cupboard before you need it
+ Urine strips need no blood sample
Limit: Tell you ketones are present, not how unwell the pet is

Urine strips are read by eye against the chart on the tub. Blood ketone meters are a separate system with their own strips.

Ask your vet: Any ketones detected means contacting your vet immediately - agree with them in advance how they want to be told.

See ketone strips on AmazonCheck whether Subscribe & Save is offered

Alcohol prep wipes

A box lasts months

Preparing the sample site

+ Pennies per use
+ Boxes of 100+ last months
Limit: Let the site dry before sampling, or the reading can be affected

Standard 70% isopropyl pads. No pet-specific product is needed.

Ask your vet: Ask whether they want you to use them at all - practice varies.

See pack sizes on AmazonCheck whether Subscribe & Save is offered

The item we cannot sell you is the one worth most

Insulin comes from your vet, and it is the expensive part. You are entitled to ask for a written prescription and buy it elsewhere, which is often cheaper — your practice charges a fee for writing it, so whether you come out ahead depends on the numbers. How written prescriptions work, and when they are worth it.

Two things we will not pick for you

Most of what is on this page is a commodity, and one brand is much like another. These two are not, and choosing wrongly has a consequence beyond wasting money.

Pet glucose meter
Pet-calibrated meters read differently from human ones, and the meter decides which strips you are tied to. Ask your vet which to start on.
Insulin syringes
Syringe concentration must match the insulin. Your vet supplies these.

Both are questions for the person who has examined your animal. See home glucose monitoring and why diabetes will not stabilise.

One thing we will not sell you

Keep plain honey or glucose syrup in the cupboard for hypoglycaemia first aid — agreed in advance with your vet. We deliberately do not link to it. Sugar-free syrups can contain xylitol, which is poisonous to dogs, and no keyword search can rule that out for you. Plain honey avoids the question entirely and works just as well. See the hypoglycaemia guide.

Buying this stuff less often

Strips and lancets are usually cheaper per unit in larger boxes, and several of these are available on Amazon's Subscribe & Save, which is worth using for the items you know you will get through. Two cautions: strips expire, so an enormous box can go to waste if your vet reduces how often you test, and a subscription set up at diagnosis often does not match how much you are testing six months later. Check it occasionally.

Never stockpile against a meter you might change. Strips are tied to their meter, so a drawer full of them becomes worthless the day you switch.

Knowing when you are running low

Mello logs every reading and injection, so the app knows roughly how fast you are getting through strips and lancets — and it keeps the record your vet asks for at the next appointment.

See what the app does