Fatty Acid Binding Protein (FABP) in Urine

Your doctor may order this test if you have symptoms that suggest a certain condition, if you have risk factors that need closer monitoring, or as part of a routine checkup to see how well a particular organ or body system is working.

Your doctor may recommend this test if you have symptoms like fatigue, swelling, or unexplained weight changes, or if you have conditions like kidney disease, diabetes, or muscle disorders. It can also help monitor certain treatments.

Before the test, your care team will explain the procedure and answer any questions you have. You may be asked to avoid eating or drinking for several hours, pause certain medicines, or wear loose, comfortable clothing, depending on the type of test being done.

No special preparation is needed. You’ll provide a urine sample, typically collected in the morning. Avoid excessive exercise or certain medications that might affect results for 24 hours before testing.

During the test, a small sample of blood, urine, or other body material may be collected, or special equipment may be used to capture images or take measurements. The sample or readings are then analyzed by a laboratory or reviewed by your care team.

The test detects fatty acid binding protein, a protein that transports fats in cells. Elevated levels in urine may indicate stress on the kidneys or other metabolic issues.

Results are usually described as normal, borderline, or abnormal. Your doctor will go over the findings with you, explain what they mean for your overall health, and recommend any follow-up testing, treatment changes, or lifestyle adjustments that may be needed.

Results are qualitative (positive or negative) rather than numerical. High levels may prompt further testing for kidney function, diabetes, or muscle disorders. Your doctor will discuss findings with you.