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Amino Acids - Blood

Referred out for testing

Source Blood
Mnemonic BGLBL

BGL Test Name field: Amino Acids
Specimen Requirements

1 x 4 mL dark green top sodium heparin tube or 1 x 4 mL dark green lithium heparin tube, PST is not acceptable.

Serum will not be accepted.

Minimum 0.25 mL plasma

Requires a minimum four-hour fast; or just before next feed for newborns.  Physician test requests on nonfasted samples from known metabolic patients are also acceptable.

Specimen Handling

Send a copy of the requisition with the specimen.

PSC:
Centrifuge, transfer plasma to aliquot tube, write "Heparin" on the aliquot tube, and transport on ice to DSC.

RRL:
Centrifuge, transfer plasma to aliquot tube, write "Heparin" on the aliquot tube, and transport on ice to ACH.

Extra-regional:
Centrifuge, transfer plasma to aliquot tube, write "Heparin" on the aliquot tube, and freeze prior to transport to DSC.

DSC:
Freeze plasma upon receipt in lab; ensure frozen specimens do not thaw.

Additional Information

This test is for the investigation of disorders of amino acid metabolism.

Metabolites reported: phosphoserine, taurine, phosphoethanolamine, aspartic acid, hydroxyproline, threonine, serine, asparagine, glutamic acid, glutamine, sarcosine, alpha-aminoadipic acid, proline, glycine, alanine, citrulline, alpha-aminobutyric acid, valine, cystine, methionine, cystathionine, isoleucine, leucine, tyrosine, beta-alanine, phenylalanine, beta-aminoisobutyric acid, homocystine, gamma-aminobutyric acid, ethanolamine, hydroxylysine, ornithine, lysine, 1-methylhistidine, histidine, tryptophan, 3-methylhistidine, anserine, carnosine, arginine.

Testing Location ACH Biochemical Genetics Lab
Testing Frequency Daily; must notify ACH Biochemical Genetics Lab for priority turn-around

Alternate Name(s)
Reference Interval Provided on test report.