Serum/Plasma Amino Acid Profile (Qualitative/Quantitative Panel)

What This Test Measures

This panel typically includes amino acids such as alanine, arginine, asparagine, aspartate, cysteine, glutamine, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, valine, and others. The test may also assess smaller molecules like citrulline, ornithine, or urea-related compounds depending on the specific panel requested.

Why It’s Done

Doctors may order this test to diagnose or monitor conditions such as metabolic disorders (e.g., urea cycle disorders), kidney disease, liver disease, malnutrition, or certain genetic disorders. It can also help assess how well your body is processing nutrients.

Sample Collection and Preparation

A blood sample is drawn from a vein, usually in your arm. The blood is then processed to separate the serum or plasma for testing. Urine samples may also be analyzed for specific amino acids in certain contexts.

Test Results Interpretation

Results are compared to reference ranges specific to the amino acids measured. Abnormal levels may indicate metabolic imbalances, dietary deficiencies, or underlying health conditions requiring further medical evaluation.