Monday - Friday, 0800 - 1700.
2 - 4 days.
0.3 mL (at least 0.5 mL preferred).
Centrifuge and separate from cells within 1 hour of drawing. Freeze serum or plasma.
Interpretive Reference Range:
Provided with patient report. Age dependent.
Useful in diagnosis of cystathionine beta-synthase deficiency, deficiency of methionine activating
enzyme, or metabolic liver disease.
Ion exchange chromatography (amino acid analyzer).