CPT Code:

82131

Availability:

Monday - Friday, 0800 - 1700.

Turnaround Time:

2 - 3 days.

Minimum Volume:

2.0 mL.

Container:

Durable, tightly sealed plastic urine container (not a urine cup).

Specimen Handling:

Random urine, morning specimen preferred.  Freeze immediately after collection without preservative.

Interpretive Reference Range:

Semi-quantitative determination of peak size relative to other amino acids.

Use:

Increased in sulfite oxidase deficiency and molybdenum cofactor deficiency.

Methodology:

Dip stick for sulfite, and ion exchange chromatography.