Home testing, glucose curves and notes for your vet

Do I have to test my diabetic dog's glucose at home?

Checking your diabetic dog's glucose at home is common and most vets find it helpful, though it isn't required. Some people never test at home and rely on vet visits instead. That's okay too, if your vet is happy with it.

Early on, the aim is simply a dog who stands still and a drop of blood from the ear, lip, paw or elbow. Let your vet pick the meter, show you how, and tell you what to report. Share every reading with them, and never change his insulin yourself.

If your vet doesn't do home testing and you'd like to, ask why they don't recommend it and how they plan to keep an eye on your dog instead. Home testing needs the right meter, someone to teach you, and someone to go through the results with you. Tell them if clinic visits or the worry are getting hard for you, and ask for a plan they can support, or get a second opinion. Please don't test without telling your vet.

If your dog seems weak or unwell at any point, call your vet straight away. Testing can wait.

Which glucose meter and test strips to use

Before you buy, ask your vet which meter they can support for dogs. Most vets recommend a meter made for pets. Human and pet meters can read a dog's blood differently, so don't treat them as the same, and don't use an online conversion or average two meters.

It's easy to grab the wrong box when you're tired, so check which test strips fit your glucose meter every time. A strip can fit the slot and still give wrong readings. Read the full meter name and the strip box side by side. Just because a strip worked on someone else's meter doesn't mean it works on yours.

Before you settle on a meter, check you can keep getting the matching strips, and note the exact strip name, expiry date and storage instructions. Order more before you run out. If strips are hard to get, ask your vet whether a different meter would be easier, rather than mixing brands or swapping in other strips.

Take the exact meter and strip details to the vet before you start. Ask them to check the meter and strips together, show you how to take a sample, and watch you get a reading.

Where to prick your dog for a blood sample

Finding a spot your dog will put up with can take a few tries. You can get a drop of blood from the ear, gum, paw pad or elbow, and most owners use the ear, lip or paw. Stick with the spot your vet showed you, and ask them first if you want to try a different one, so you don't end up with a sore spot.

One ear might work for a month and then he starts flinching. The lip is often easier if someone helps. Write down which spot you were shown, which spot you're actually using, any bruising, and whether you need a second person every time.

If you prick and nothing useful comes out, ask for another lesson instead of pricking again and again. Follow what the meter's error message says rather than adding more blood or squeezing harder. Ask your vet which lancets, lancing device and depth setting go with your meter, and take your actual kit in so they can watch you.

Put used lancets in a sharps container, and read how to dispose of used syringes and lancets safely.

When your dog hates glucose tests

Some dogs hide as soon as the meter comes out. You start dreading it as much as he does, stop testing, and then feel guilty. If your diabetic dog hates glucose tests, you're far from alone, and your vet would much rather hear about it than have you struggle on.

Some dogs never settle with pricks. A different spot, a sensor, or curves done at the clinic might be kinder than forcing it. Praise afterwards helps many dogs. If you use a treat, make it one your vet has okayed. Some owners keep back a bit of his measured meal as a reward for testing, which is fine as long as the total is still what your vet set.

Ask your vet to show you how to hold him. Tell them what he does when you try, which spots you've tried, and whether anyone at home is getting bitten or growled at. Be honest about how often you really test. If your vet thinks you're testing every day and you're managing once a week, they'll get the wrong picture.

How often to test your diabetic dog

How often to test your diabetic dog is your vet's call. Lots of owners test several times a day, before meals or around walks. Most vets want closer checks at first, and things can take a month or more to settle.

The first couple of weeks can feel like a second job. Later, some people test less and watch thirst, weight and energy instead. Others keep testing just as much. Both are normal. Tell your vet how many readings you actually manage on a normal day, and be honest about what you can keep up.

Many owners want a reading before every shot, just to feel sure. Some vets do ask for a test before each injection, but it isn't the plan for every dog, and a reading on its own doesn't tell you what to give. Ask your vet when they want you to test and what to do with each result, including a test that fails, a reading that surprises you and a dog who seems unwell. Don't delay an urgent call to get a reading.

What one glucose reading can and can't tell you

One glucose number only shows what the meter said at that minute. It can't tell you the whole day is safe, or what to do with his insulin. You might test once, hate the number and want to do something before dinner. Or you might like the number and miss that he's been drinking all evening.

If your meter shows a number and you don't know what to do, write down the reading, the time, his last meal and how he seems. If he is weak, wobbly, vomiting or very flat, call your vet now. If he seems his normal self, stick to your plan and send the number to the clinic.

Write the reading exactly as the meter shows it, with the units and which device you used. A note like ‘At 4pm the meter said this, he ate at 8, and he was quiet’ is the kind your vet can use. If you think a reading is wrong, put a question mark next to it rather than writing in a number that looks right. What any number means for his insulin is your vet's decision.

What to write in your diabetic dog's notebook

Four lines a day is enough for a notebook for your diabetic dog: what he ate, including treats, how he seemed, the time of his injection, and one extra thing if it mattered, like water, a walk or a question.

Note vomiting, a big walk, extra treats or a messed-up routine, with the real times. Keep what you saw separate from what you think it means, and if someone else saw it, say who. Leave judgements like ‘well controlled’ to your vet. Keep the insulin amount on your vet's written plan, not in your notes.

You can keep notes in today's diabetic dog care log and pull them into a week of notes to show your vet. Notes saved in your browser won't follow you to another phone or browser, so back them up. If paper suits you better, the printable seven-day log is handy, especially if someone else is looking after your dog.

How to do a glucose curve at home

A glucose curve is a set of readings taken across the hours between injections. You write them down and send them to your vet. Many vets prefer curves done at home, where your dog is calmer. The first curve is often done in the second week, but your vet will decide.

Home curves don't suit every dog or every home. It depends on how your dog copes, whether you've been shown how, and what your vet needs to see. Ask your vet to show you the kit and write down when to test, how to record it and who to call. Keep meals and walks as normal on the day. If taking blood upsets your dog or keeps failing, stop and ask about another way.

On the home curve sheet, write the date, the meal times and the injection time, each time you tested and the number on the meter, and anything that happened, like a refused meal, a walk, excitement or a nap. If you miss a reading, leave it blank and write down why. An honest gap is more useful to your vet than a guess.

Curves change from day to day, and they can miss a low during the night, so one good curve doesn't mean everything's sorted. If night lows worry you, read whether your dog could go low at night and ask your vet when his insulin works hardest. If he's unwell, call your vet before starting a curve. Never change his insulin based on a curve without talking to your vet first.

Why readings at the vet differ from home

Clinic numbers often don't match what you see at home, because a day at the clinic is very different from a day at home. Stress, food and routine all change, so different readings don't mean either one is wrong.

Tell the vet what happened on each day and which meter gave each reading. Ask whether testing at home would give a clearer picture for your dog and how they want results sent. Don't compare single numbers without times, and don't change the insulin yourself because of the difference. If you're heading in for bloods, check whether to feed him and give insulin on vet visit day.

Glucose sensors for dogs

If testing is a daily battle, a sensor can be a real relief. A skin sensor for your diabetic dog sticks on the skin and records glucose without pricking him every time, and most last up to about two weeks. It reads the fluid under the skin rather than blood, and can show trends over several days.

Sensors do fall off, and the first day's readings can look odd. Stress and meals both push the numbers up. Some vets limit sensor use so owners don't panic over every small rise and fall, because more numbers can mean more worry without making your dog safer.

A sensor and a meter won't always match, especially when sugar is changing fast or is very high or very low. If a sensor falls off, shows errors or gives a reading that doesn't fit how your dog seems, call the vet for a backup plan. Don't stick it back on, use a conversion you found online, or stick a human sensor on your dog just because someone else did. Ask your vet which one to use and who reads the trace.

If a sensor shows a low, check it with a blood reading the way your vet showed you. Never change your dog's insulin because of a sensor alarm without talking to your vet. If he is weak, wobbly, collapses or has a seizure, go to the emergency page and get urgent help. Don't let fiddling with the device hold up that call.

Urine strips and ketones

On days a blood test isn't happening, a urine strip can still tell you something. Most vets see urine strips as extra information rather than a replacement for the checks they asked for. You can wet a strip from pee on grass or gravel. Lots of owners test urine mostly to watch for ketones. If a strip shows no glucose at all, call your vet. Never change his insulin based on a strip.

Ketones build up when his body can't use sugar properly and starts burning fat instead. If a urine strip shows ketones, you're right to act. Call your vet the same day, even if he seems fine. If he's also vomiting, weak or flat, call now, because he may need hospital care. Don't wait to see if the next strip looks better.

When you call, have ready when you tested and that it was urine, the result in the words printed on the pot, his appetite, vomiting, breathing and whether he can stand, and when he last ate. Stay with him, leave his water down if he's drinking calmly, and don't try home remedies from the internet. If he collapses or you can't wake him, go to an emergency clinic now.

Diabetic ketoacidosis, or DKA, is a serious emergency where ketones build up and the dog becomes very ill. A dog with DKA usually needs hospital treatment. A strip can't tell you how bad it is, and a negative strip means nothing if your dog is clearly unwell. Many dogs recover with treatment, but nobody can promise how it'll go. Don't try to treat DKA at home. When the day goes wrong covers urgent help in more detail.

What a fructosamine test is

A fructosamine test is a blood test that helps your vet see how your dog's sugar has been over the past few weeks. It tells them something different from a single reading, but it doesn't replace how he's doing at home.

It can't tell you when a low happened or explain every up and down. Ask what the result adds, what it can't tell you, and what happens next. Take your notebook and any readings they asked for to the same appointment. If he shows signs of a low, act straight away, whatever an earlier blood test said, and never change his insulin because of the result.

Judging control by thirst, peeing and energy

Numbers are useful, but your dog tells you a lot too. Before Cooper was diagnosed, he drank and peed more, and those are exactly the signs worth watching. If you can't test at home, you can still judge control by thirst and energy. Most vets say things are probably under control when the heavy drinking, peeing and hunger have settled and his weight is steady.

Good signs are that he drinks less, sleeps through the night again, and his weight at the clinic stops dropping. For your vet, note how often you fill the water bowl compared with last month, accidents and night trips out, his appetite, his weight with the date, and his energy on a usual walk. The weight tracker helps, and there's more on thirst in why your diabetic dog is drinking so much.

Some owners are sent home with no meter and told to watch for signs. Watching signs is useful, but if your vet asked for numbers, signs alone aren't enough. A good-looking number doesn't count for much if your dog is weak, vomiting or clearly not right. If his thirst gets worse, he loses weight or he seems unwell, call your vet. Never change his insulin on signs alone.

When meter readings jump around

If your meter readings jump around or a number doesn't fit how your dog seems, the meter isn't always broken. The cause can be the dog, the blood sample or the meter. Use only the strips made for your meter, and do the control check the way the instructions say.

Hot, damp weather is hard on kit too. Heat and damp can spoil your meter, test strips and urine strips, and you can't always see the damage. Keep strips in their own closed pot, away from sun, steam and the bathroom, and never in a hot car or steamy kitchen. Write down where you store them, expiry dates and when each pot was opened.

A second meter won't settle it on its own, because different meters can read differently. Take the meter, strips and recent results to the vet and ask them to compare against their own machine. Don't make treatment decisions on a reading you don't trust. If your dog is weak, shaky or vomiting, call your vet whatever the meter says. A normal-looking reading doesn't make it okay.

Taking your notes to the vet, and when to call now

Bring your dated notes, the name of your meter or sensor, the units it shows, anything unusual, and your questions written separately from the numbers. Take the whole log, including the ordinary numbers, so your vet sees the full picture. Keep the original readings so your vet can check any summary against them. The questions for the vet printable can help you get them down. If you use AI to tidy your notes, ask it for a summary and questions only. Dose decisions stay with your vet.

Leave gaps as gaps, mark odd readings with a question mark, and write down how your dog actually seemed. For how testing fits into a normal day, see the daily routine guide, and if you're brand new, starting out with a diabetic dog.

If your dog is weak, shaky, vomiting or won't eat, call your vet now. This is an emergency. If he collapses, has a seizure, won't respond or has trouble breathing, go to an emergency vet now and call ahead if you can, and open the emergency or low blood sugar page. Don't wait until you've gathered more notes or taken another reading.