A patient presents to the emergency department with nausea and severe, colicky back pain that radiates into the groin. When asked to locate the pain, he points to the right costovertebral angle region. His physical examination is unremarkable. Which of the following laboratory tests is most important for the diagnosis?

Question

Quizplus · Accepted Answer

Urinalysis is the most important initial laboratory test for a patient presenting with symptoms suggestive of kidney stones, such as severe, colicky back pain radiating into the groin and pain in the costovertebral angle region. It can detect hematuria, which is common in kidney stones, along with other abnormalities.

A Patient Presents to the Emergency Department with Nausea and Severe