A 43-year-old woman presents with (RUQ) abdominal pain, and vomiting. She has had three children. The white blood cell (WBC) count is 14.3×109/L and liver function tests are normal. To establish the diagnosis in this patient, the test of choice is:

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Vikas Bhardwaj
Medical Technologist, AIIMS New Delhi
Updated: Apr 17, 2026