Qualitive screen of all amino acids, including cystine.
Please note: Qualitative screen does not provide numeric concentration values.
Monday - Friday, 0800 - 1700.
2 - 10 days.
Random urine, morning specimen preferred. Refrigerate or freeze without preservative.
Interpretive Reference Range:
Screening for inborn errors of amino acid metabolism.
Urines that are too dilute can not be evaluated.
Paper chromatography and cyanide-nitroprusside test for sulfhydryls and disulfides.
Excretion of certain amino acids is increased in several aminoacidemias, such as phenylketonuria and maple syrup urine disease, and in inherited and aquired disorders of the proximal renal tubule.