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Glutamic Acid – Plasma, CSF, Urine

Glutamine Plasma – Plasma, CSF, Urine

Methionine, Quantitative – Plasma, CSF, Urine

Ornithine, Quantitative – Plasma

Tyrosine – Plasma, CSF, Urine

Methodology: Ion Exchange Chromatography
Edit Date: 6/11/2010
Performed: Varies
Released: 10-14 days after setup at PeaceHealth Laboratories’ reference lab.
CPT Code: 82131-90
Specimen Collection Details
Collection: One 4 mL green top tube (heparin). Also acceptable: Cerebrospinal fluid (CSF) or urine.
Handling: Centrifuge green top tube and separate plasma from cells. Freeze plasma or urine immediately. Freeze CSF within 4 hours. Indicate amino acid to be tested, diagnosis, and medications.
Standard Volume: 0.5 mL plasma or CSF, or 3 mL urine.
Minimum Volume: 0.5 mL plasma or CSF, or 1 mL urine.
Transport: Frozen on dry ice.
Comments: Indicated when quantitation of one or two specific amino acids is required.

Alanine, Alpha-aminoadipic acid, Alpha-amino-n-butyric acid, Anserine, Arginine, Argininosuccinic acid, Asparagine, Aspartic acid, Aspartylglucosamine, Beta-aminoisobutyric acid, Carnosine, Citrulline, Cystathionine, Cystine, Ethanolamine, Gamma-aminobutyric acid, Glutamic acid, Glutamine, Glycine, Histidine, 1-Methylhistidine, 3-Methylhistidine, Homocystine (Homocysteine), Isoleucine, Leucine, Lysine, Methionine, Ornithine, Phenylalanine, Phosphoethanolamine, Phosphoserine, Proline, Sarcosine, Serine, Taurine, Threonine, Tyrosine, Valine.

Rejection Criteria: Thawing specimen.

Age dependent. See patient report.

PeaceHealth Laboratories