Monday - Friday, 0800 - 1700.
2 - 3 days.
Durable, tightly sealed plastic urine container (not a urine cup).
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.
Increased in sulfite oxidase deficiency and molybdenum cofactor deficiency.
Dip stick for sulfite, and ion exchange chromatography.