How to Test Your Pet's Blood Glucose at Home (starring Harry)

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Disclaimer This information was developed through the experiences of many owners of diabetic pets, who have begun to test Blood Glucose at home with meters designed for human diabetics. Managing Diabetes is a long term commitment. A veterinarian who is knowledgeable about the disease and committed to ensuring the best quality of life for your pet is ideal. While many veterinarians have not yet had experience with clients who do home BG testing, most of those that do have come to appreciate its value. It is very important to find a veterinarian that will work with you on interpreting the results of your BG testing, finding the right insulin and dose for your pet, and who will be familiar with the case history when your pet needs medical attention. While not every diabetic pet needs to have BGs tested at home, it is a valuable tool.

This web site evolved from our personal experiences in testing Blood Glucose in our cat, Harry, with the Elite XL, using the Ear Prick method. Our methods may or may not work for you and your pet. Be flexible and try other approaches. We have expanded the site to include other meters and the lip prick technique for dogs, but the most complete descriptions are found in the section about doing an Ear Prick on a Cat and using the Elite XL, please read that section and excuse the bias when it appears elsewhere.

Glossary of Diabetic Terminology Abbreviations

Monitoring your cat or dog's blood glucose level at home with a glucometer like human diabetics use can help you to manage their diabetes more wisely.

Many factors affect insulin activity.  The primary task is to balance the amount and type of food given with the characteristic absorption and  metabolism of  the insulin administered to your individual cat.  A cat or dog that eats more than usual, will have a higher BG, one that eats less or vomits will have a lower BG and may need less insulin than usual to prevent  hypoglycemia. Stress and  infection tend to raise BGs, exercise tends to lower them.  Medications can affect either way--always ask your veterinarian to check how any new medication might affect BG levels.  With so many things affecting BG levels, your diabetic pet may have different responses to the same dose of insulin on different days.
 

Advantages of Home Blood Glucose Testing for Diabetic Pets.

• Readings done in the home will not be artificially elevated by the stress of the trip to the vet.
• Doing pre shot and peak BG readings will allow you to gauge the effectiveness of treatment and to evaluate the impact of changes in diet, feeding schedule, insulin type, and dose, which need to be individually adjusted for each cat or dog.
• When your cat or dog doesn't seem right, you can test the BG and KNOW whether you are dealing with Hypoglycemia (BG dangerously low) or Hyperglycemia (BG dangerously high, possible Ketoacidosis) and respond accordingly. If BGs are high, it is VERY important to also test urine for ketones, especially if your pet is eating less than usual.
• A lower than normal pre shot BG reading will warn you that the usual dose of insulin might be too much and allow you to adjust dosage and/or feeding patterns to avoid a dangerous hypoglycemic episode.
• Doing curves at home is less expensive and the data is more reflective of the actual eating/exercise/stress levels that the pet experiences at home.  Most vets can't do 24 hr curves, but being able to get BG readings throughout the night, can be essential to regulating a cat on a long acting insulin like Ultralente or PZI.  When 2 shots of long acting insulin overlap, predicting "peak" times can be a challenge.
• Home curves help avoid Somogyi Rebound situations that happen because the only readings ever seen at the vets are high, elevated by stress. Stress can elevate BGs 200 points very quickly in cats, and if the insulin dose gets raised too high for the animal, rebound causes high BGs and PU/PD symptoms to re-appear, just as when the diabetic pet was receiving no insulin.

Validity of Home Blood Glucose Testing

Your cat won't hate you for doing ear pricks.  Your dog won't hate you for doing lip pricks. Most pets accept BG tests as routine, especially when food regularly follows.  If you can stay calm while you do it, your pet will likely be calm too.  Some cats purr through the whole procedure. As impossible as it may sound now, BG testing can be a pleasant, bonding experience, a special attention time for your pet.

Blood Glucose Meter Considerations

Sample Size

Required sample sizes are measured in microliters.

How big a blood drop is needed for your meter?

Popular Meters 9/99

All meter manufacturers have Customer Service Representatives available 7 days a week, 24 hours a day who are happy to answer your questions. Phone numbers are included in the "Detailed Comparisons of Some Meters Used with Pets" table. Meters frequently come with rebate offers of US$20 or more and often an additional trade-in of US$20 or more if you send in another manufacturer's meter, working or not. Customer Service can tell you of current offers and supply the rebate form, if it was not provided by your pharmacy or included with your meter.

Upon request, Bayer will send you a free video(s) on how to use your their Glucometer(s). Other manufacturers offer free videos too. Watch the videos for the meters that you are interested in to learn more about their features and procedures before you buy. Watch again as you prepare to test yourself and your pet for the first time.

Detailed Comparisons of Some Meters used with Pets

Other Meters

Blood Glucose Units: mg/dL (U.S.) or mmol/L (Canada/Europe)
 

Try Out Some Steps Before you Buy a Meter

1. Figure out where you have good lighting, or set up a lamp that you will use.
2. Take your pet to where you plan to test and give positive attention with the light on to get him or her used to being in that place and position, to relax and feel comfortable with it. Some pets like to be brushed, others just like to be petted or hugged, avoid active or rough play.
3. Gently massage the ears whenever you are interacting, especially if this is new to your cat. For a dog, massage lip area.
4. Add the warming the ear step for a cat (warm washcloth in the plastic bag or the heat of the light bulb).
5. One vet suggested actually pricking the cat's ear with a lancet before buying the meter, to see if it would tolerate pricks. It's up to you. I was nervous enough about doing an ear prick, I wanted it to be for a BG value when I did it.

1. Read the manual and do initial setup. You may need to install the batteries, set date and time, pick U.S. or European units of BG measurement, and use a special Check strip to verify the meter electronics are working correctly.
2. Most manufacturers' test strips and meters have codes that must be set to match. Each new box of Elite strips will have a Code strip (has F-number on it) to set the meter. The FastTake code must be entered with the C button.
3. Get the free video from the manufacturer's Customer Service and watch it until you are ready to try testing yourself.
4. Go through all the steps of doing a BG Test, using a Normal Control Solution to confirm the strips you have are ok.
5. Test yourself (your finger is fine), but make sure it is clean, dry, and WARM. Try the lancet device that comes with the meter on yourself to learn what the prick feels like and how to aim with it. Try different depth settings to see how they feel. If you think you may want to hand-hold the lancet, try that too. You can judge how much it might hurt your pet, by how much it hurts you. We had already been using the BD Ultra-Fine II 3/10cc short needle syringes to give insulin for a week with hardly any reaction from our cat , before we bought the corresponding lancets. They don't hurt us or him.

It's good to learn to do the BG tests solo. If you have a partner and can both do it solo, that's twice the coverage.

Testing Supplies

Most meters come with some sort of lancet device (though it may not be an adjustable one). Try it on yourself, and also try pricking yourself with lancet alone. Try the different depth settings on the lancet device to see what they feel like to you. A shallow setting and a fine or ultra fine lancet will be plenty for cat's ear or a dog's lip. A paw pad or a dog's leg callous will require a deeper lancet setting and possibly a lancet that is not labeled "fine" or "thin". Some FastTake meter users have found a transfer pipette helpful in getting the blood drop onto the test strip.

Lancets

Lancet Devices

Urine Test Strips - Check for Ketones

Where to Buy Supplies at Good Prices

Cat Treats

Feline Blood Glucose Curves

Guidelines to BG InterpretationReview with your Vet, tailor for your pet

When your Pet Won't Eat--Anorexia

Ketones & BG levels

Use Computer to Plot Your BG Data

Web Sites Featuring Feline Diabetes

Web Sites Featuring Canine Diabetes

Web Sites Featuring Health Information

Specific Diseases

General Health/Disease Sites

Blood Tests

Drug Information

Pets with Diabetes WebRing Join the Pets with Diabetes WebRing  e-mail Nancy Johnson the site owner [Skip Prev] [Prev] [Next] [Skip Next]  [List Sites]

With sincere thanks to the sponsors of and contributors to the Felinediabetes.com, Petdiabetes.org, and Sugarcats.com websites and to the many who have generously shared their knowledge and experiences on the Feline Diabetes Message Board and the Muffin Mailing List. We also thank the manufacturers that provided information for these pages, but please note that this site is not sponsored by or affiliated with Bayer, LifeScan, Abbott Medisense, Roche, or any other manufacturer of meters or diabetic testing supplies. The mention of their products does not imply an endorsement by these manufacturers for use of these products for animal testing.

Bayer asked that we include the following disclaimer:

"The Bayer diabetes testing products were developed for human use. We have not conducted studies in animals and we do not make any claims regarding the use of our products for animal testing. While we understand they can be used to improve and prolong animal life, such use is beyond their intended use".

Visitors since 03/18/2001