How is cholecystitis or cholangitis diagnosed?

Your vet will use a combination of history taking, physical examination, blood biochemistry, and abdominal ultrasound as the primary diagnostic tools. Bile or blood culture and advanced imaging may be added if needed to clarify the cause. Follow your vet's recommended testing plan.

Should I be worried if my pet develops jaundice?

Jaundice indicates a problem with bilirubin metabolism or bile duct patency, and the severity must be assessed with bloodwork and imaging. We recommend seeing a vet as soon as possible to prevent the condition from worsening.

How often does cholecystitis require blood test monitoring?

Follow-up frequency depends on the disease course and treatment response. A common approach is to recheck bloodwork 1–2 weeks after starting treatment, then adjust the interval based on progress. Follow your vet's recommended schedule.

What should I bring or prepare for the appointment?

Bring a symptom log (onset time, temperature readings, vomiting count), any videos you recorded, and recent blood test or imaging reports. Also list all current medications and any known allergies so your vet can make a quick assessment.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Cholecystitis & Cholangitis in Dogs and Cats: Jaundice, Vomiting, Ultrasound & Treatment [2025]

Cholecystitis and cholangitis are inflammatory diseases of the biliary system that cause jaundice and abdominal pain. Treatment typically involves antibiotics, and surgery may be required in severe cases.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap Editorial Team

Sources: ACVIM, WSAVA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek Emergency Care Immediately

•Persistent high fever with extreme lethargy and inability to eat
•Vomiting or inability to eat for more than one day with obvious dehydration
•Jaundice appearing with rapidly yellowing eyes or gums

Schedule a Clinic Visit Soon (within 24–72 hours)

•Noticeably decreased energy but still eating small amounts
•Intermittent vomiting or reduced appetite but still drinking water
•Visible discomfort or flinching when the abdomen is touched

01What symptoms signal a problem?

Common clinical signs of gallbladder or bile duct inflammation. Symptoms can change rapidly — monitor closely and keep a record to help your vet assess the situation.

Lethargy and noticeably reduced activity
Repeated vomiting, possibly with signs of dehydration
Persistent fever or elevated body temperature
Jaundice — yellowing of the skin, whites of the eyes, or mucous membranes
Obvious abdominal pain or guarding when the belly is touched
Loss of appetite or short-term weight loss

Seek emergency care immediately if you notice the following symptoms:

⚠️ Persistently high fever with severe weakness or collapse
⚠️ Vomiting or inability to eat for more than 24 hours
⚠️ Worsening jaundice or signs of altered consciousness

02How to monitor at home and know when to seek urgent care

A home observation log helps your vet quickly understand the progression of illness and prioritise the right treatment.

Note when symptoms first appeared and how they developed
Take your pet's temperature daily and record the time and reading
Track the number of vomiting episodes, the appearance of vomit, and when they occur
Observe and record changes in urine colour, volume, and frequency
Film any episodes of pain, vomiting, or abnormal behaviour for your vet
Arrange a vet visit promptly if symptoms worsen

03How does the vet reach a diagnosis? Common tests and examinations

Your vet will combine physical examination, bloodwork, and imaging to confirm biliary disease and assess its severity.

Full physical examination and abdominal palpation to locate pain

Blood and biochemistry panel to assess liver and biliary function and inflammation markers

Abdominal ultrasound to evaluate the gallbladder and bile duct structure and contents

X-rays for a broader view of abdominal structures

Bile or blood culture to identify a possible infection source

CT scan if further detailed imaging is needed

A specialist hospital with ultrasound and in-house laboratory capability is recommended

04Treatment and care after diagnosis: medications, diet, and home management

Treatment depends on test findings and disease severity, and may include medication, surgery, and regular monitoring. Home care also plays an important role in recovery.

Begin antibiotics or supportive care based on test results
Severe cases may require surgery, including cholecystectomy (gallbladder removal)
Schedule regular follow-up appointments and blood monitoring as directed by your vet
Short-term dietary adjustment to a low-fat, easily digestible food
Monitor temperature, appetite, and elimination at home and keep a log
Arrange comprehensive outpatient follow-up at a specialist hospital

05What to prepare before the vet visit — key information that helps pinpoint the cause

Note the onset time, how symptoms progressed, and when each sign first appeared

Record a short video of vomiting episodes, urination, or abdominal pain reactions

Track water intake, urination frequency, and changes in urine colour

Bring any recent blood test results or imaging reports for comparison

List all current medications, supplements, and known allergies

If your pet has a fever, note the first temperature reading and when it was taken

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.