Serum or plasma mass concentration of a specific protein marker (e.g., related to liver function or metabolic screening)

What This Test Measures

The test detects the mass concentration of a specific protein in your blood, often used to evaluate liver enzymes, metabolic pathways, or other biochemical functions. The exact protein may be related to liver health, such as albumin or other markers, but the result will be interpreted by your healthcare provider based on clinical context.

Why It’s Ordered

Your doctor may order this test to monitor liver function, check for metabolic disorders, or assess overall health during routine check-ups, evaluations of symptoms like fatigue, jaundice, or unexplained weight changes, or as part of a broader diagnostic workup.

Common Reasons for Testing

Common triggers include symptoms like jaundice (yellowing of skin/eyes), unexplained fatigue, abdominal pain, or if your doctor suspects liver disease, kidney issues, or metabolic imbalances. It may also be part of a screening for conditions like diabetes, thyroid disorders, or genetic metabolic syndromes.

Sample Collection and Preparation

Blood is drawn from a vein in your arm, typically in the morning on an empty stomach if fasting is required. The blood is processed into serum (after clotting) or plasma (using an anticoagulant), then sent to a lab for analysis. Avoid strenuous activity or certain medications before the test as instructed by your provider.