Smart protocols
Want the guided version inside Vetool?
Use this page as a reference. When you are ready to work through a patient, the Canine Diabetes Protocol starts with outpatient triage, then keeps the starting plan, syringe warning, insulin handling, owner instructions, and 7 to 14 day recheck together.
Start with the outpatient decision, not the dose
A newly diagnosed diabetic dog may appear ready for a routine starting plan. First decide whether outpatient management still fits.
Confirm that outpatient management fits
The AAHA guideline calls for admission when a diabetic dog is clinically sick and ketotic. If systemic illness signs or ketonuria are present, stop the routine outpatient workflow. Assess the dog's clinical status, ketosis, concurrent illness, and need for hospital care before selecting insulin or planning discharge.
The starting calculation comes after this decision.
Build the starting plan around the patient
The starting plan depends on the dog's estimated ideal body weight and the insulin selected. The calculation, rounding method, and practical dose increments vary by insulin.
Record the starting plan as one set of instructions
Before discharge, record the selected insulin, starting dose, subcutaneous route and interval, matching syringe or pen device, insulin handling instructions, and first recheck date together.
Check measurability in small dogs
A calculated value still has to make sense as a dose that the owner can measure accurately. Review the rounded dose, syringe or pen increments, and patient-specific risk before finalizing the plan.
Choose the insulin and syringe together
Insulin concentration and syringe concentration are one decision. A U-40/U-100 syringe mismatch can deliver either 2.5 times the intended dose or only 40% of the intended dose.
Vetsulin or Caninsulin
If dispensing a vial, use a U-40 syringe. If dispensing a cartridge or pen presentation, use the manufacturer-specified pen and compatible needle. Confirm the current local label for the exact presentation.
NPH
If dispensing a vial, use a U-100 syringe. If dispensing a cartridge or prefilled pen, use the manufacturer-specified pen and compatible needle. Confirm the current product label for the exact presentation.
Detemir
If dispensing a vial, use a U-100 syringe. If dispensing a cartridge or prefilled pen, use the manufacturer-specified pen and compatible needle. Dogs can be particularly sensitive to detemir, so the insulin-specific starting plan matters. Confirm the current product label for the exact presentation.
Write the insulin name, concentration, exact presentation, and matching syringe or manufacturer-specified pen beside each other. For a pen, select a compatible needle long enough for the dog, prime before each injection, and keep the needle in place for the manufacturer-specified hold time. Confirm these steps during owner teach-back.
Match the handling instruction to the insulin
A generic instruction to mix the insulin is not specific enough.
- Vetsulin or Caninsulin
- Shake until the suspension is homogeneous and uniformly milky, then follow the current product label.
- NPH
- Roll the vial gently. Do not shake it.
- Detemir
- Use the current product label for the formulation being dispensed. Do not assume that instructions for an insulin suspension apply.
Make the owner plan specific
A dose on a discharge sheet is not a complete home plan.
Before the dog goes home, write down:
- Feeding and injection timing.
- How to store and prepare the selected insulin, measure the prescribed dose with the matched syringe or pen, and inject it subcutaneously. Confirm the owner's technique by observed teach-back before discharge.
- What to do if the dog refuses food, eats less than expected, or vomits.
- How to recognize possible hypoglycemia.
- The clinic's immediate response and contact plan.
- The date and purpose of the first recheck.
The owner should be able to follow the plan when a meal or schedule changes unexpectedly.
Need to work through a patient without searching PDFs and open tabs?
Complete the outpatient triage, enter the dog's estimated ideal body weight, and select the insulin in Vetool. The protocol keeps the starting plan, syringe concentration, handling instructions, owner checklist, and recheck framework in one place.
Book the first recheck before discharge
When following the AAHA 2018 canine pathway, perform a blood glucose curve after the first dose of a new insulin to screen for hypoglycemia. After safe discharge, schedule the next blood glucose curve and clinical recheck for 7 to 14 days after starting insulin. Re-evaluate immediately if signs suggest hypoglycemia or if the dog becomes lethargic, anorexic, or vomits.
Decide what the team will review
Until an acceptable dose is found, the AAHA guideline recommends a blood glucose curve every 7 to 14 days. Review the curve or appropriate continuous glucose monitoring data with the owner log, physical examination, body weight, appetite, water intake, urination, activity, and any signs of hypoglycemia.
Do not increase insulin from one spot glucose result
A spot check does not show the full response to insulin. Do not use an isolated high glucose value as the sole reason to increase the dose. A verified low value may support a dose reduction, but it still needs clinical context and a clear follow-up plan.
Where the first 14 days usually drift
The calculation is only one part of the starting workflow. Problems often appear in the steps around it.
The dose is calculated before triage
The dog moves into an outpatient insulin plan before systemic illness and ketosis have been assessed. Start with suitability for outpatient care.
The syringe concentration is assumed
The insulin is documented, but U-40 or U-100 is missing. Write the insulin and syringe concentration together.
One handling instruction is reused
Vetsulin or Caninsulin, NPH, and detemir do not share one preparation instruction. Match the wording to the selected product and current label.
The owner receives a dose but no backup plan
Meal refusal, partial eating, vomiting, schedule changes, and possible hypoglycemia need written instructions before discharge.
The recheck has a date but no monitoring plan
Decide what data the team wants to review and what the owner should monitor at home.
One spot glucose drives an increase
An isolated high result cannot show the full insulin response. Review the curve or CGM data with clinical signs before increasing insulin.
What the first 14 day plan should include
Before discharge, confirm that the team and owner have every part of the starting workflow.
- A documented outpatient triage decision.
- The selected insulin, starting dose, and interval.
- The matching U-40 or U-100 syringe, or the manufacturer-specified pen and compatible needle.
- Product-specific handling and storage instructions, plus documented owner teach-back of dose measurement and subcutaneous injection technique.
- Feeding and injection guidance.
- A missed meal, vomiting, and hypoglycemia response plan.
- An initial-day glucose safety-monitoring plan, including a blood glucose curve after the first dose when following the AAHA pathway.
- The next blood glucose curve and clinical recheck scheduled for 7 to 14 days after starting insulin.
- A defined BGC or CGM review plan.
- A reminder not to increase insulin from one spot glucose result.
Ready to run the workflow?
Open Vetool when you are ready to move from the guide to a patient-specific canine diabetes starting plan.
References
- Behrend E, Holford A, Lathan P, et al. 2018 AAHA Diabetes Management Guidelines for Dogs and Cats, including updates made in 2022. Journal of the American Animal Hospital Association. doi:10.5326/JAAHA-MS-6822. Read the AAHA guideline
Disclaimer
For veterinary professional education and workflow support only. This guide does not diagnose diabetes or replace patient-specific assessment, clinical judgment, hospital triage, current product labeling, local regulations, or current veterinary references. Insulin selection, dosing, monitoring, and later adjustment must be based on the individual patient and the clinician's assessment.