Diabetic Ketoacidosis in Dogs & Cats: Symptoms, Blood Sugar Testing & Emergency Care [2025]
Diabetic ketoacidosis is a life-threatening emergency caused by severe insulin deficiency leading to ketone buildup and acidosis. Urgent hospitalisation for insulin therapy, fluid support, and electrolyte correction is required.
When to See a Vet
Seek immediate veterinary care (emergency)
- •Persistent vomiting with inability to keep fluids down, or continued refusal to eat
- •Lethargy with slow responses or a clear change in consciousness
- •Rapid breathing, obvious panting, or difficulty breathing
Schedule a veterinary appointment as soon as possible (within 24-72 hours)
- •Marked decrease in appetite or continued refusal to eat for more than one day
- •Repeated vomiting with dehydration, even if alertness is still fairly good
- •Rapid weight loss over a short period or obvious weakness
01What symptoms indicate something is wrong?
When diabetes is complicated by ketoacidosis, pets often show signs of systemic weakness and metabolic abnormalities that require prompt evaluation and treatment.
- Lethargy, markedly reduced activity, or excessive sleepiness
- Noticeable weakness, difficulty standing or walking
- Markedly reduced appetite or persistent refusal to eat
- Repeated vomiting with signs of dehydration (slow skin tent)
- Rapid weight loss over a short period
- Frequent urination with significantly increased water intake (especially noticeable at night)
Seek emergency care immediately if you notice the following symptoms:
- ⚠️ Persistent vomiting preventing adequate hydration, or continued refusal to eat
- ⚠️ Excessive drowsiness with dulled responses or obvious changes in consciousness
- ⚠️ Rapid breathing, noticeable panting, or difficulty breathing
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02How do you assess an abnormality at home? Key things to watch and when to seek emergency care
Specific observations and records made at home help the vet quickly assess the condition and arrange appropriate tests.
- Note when symptoms started, how they have changed, and how often they occur
- Weigh your pet at the same time every day and record any changes
- Track the number of urinations and any obvious increase or decrease in urine volume
- Log the number of vomiting episodes, the time, and what the vomit looked like
- Observe whether energy and activity levels vary throughout the day
- Record the type, portion size, and feeding time for each meal
- Take short videos or photos (walking, drinking, vomiting) to share with the clinic
03How will the vet make a diagnosis? Common tests and examinations
At the clinic, the vet will use rapid tests and imaging to assess metabolic status and possible complications, and to identify the underlying trigger.
Rapid blood glucose, blood gas, and electrolyte tests to evaluate metabolic status
Urinalysis including urine ketones and urine glucose
Complete blood and biochemistry panel to assess liver, kidney, and other organ function
Abdominal ultrasound or X-ray to identify infection or concurrent disease
ECG and blood pressure monitoring as needed to assess overall condition
If infection is suspected, bacterial culture or related sample testing may be arranged
Follow-up with an endocrinology or specialist clinic is recommended based on findings
04How is the condition treated and managed after diagnosis? Medications, dietary adjustments, and care guide
Treatment focuses on stabilising metabolism and identifying the trigger. After discharge, close monitoring of blood glucose and clinical signs is needed, along with adjustments to diet and medication plans.
- Acute-phase priorities are rehydration, electrolyte correction, and controlling blood glucose fluctuations
- Insulin therapy must be evaluated by a vet with dose and frequency adjusted gradually
- Hospitalisation involves fluid therapy, electrolyte replacement, and close blood glucose monitoring
- After discharge, regular follow-up visits to monitor blood glucose, body weight, and clinical signs are essential
- Dietary management and consistent meal timing help stabilise blood glucose levels
- At home, record blood glucose, water intake, and urine output, and report changes to your vet
- Endocrinology specialist or long-term follow-up visits should be arranged when necessary
05What should you prepare before seeing the vet? Key information to help the vet quickly identify the cause
This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.