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Tryptophan Analysis

Test Information

This test is a quantitative measurement tryptophan.

Turnaround Time

10 days

CPT Code(s)

82131

Cost

$100

Disorders

Glutaric Acidemia type 1 (GA1)

Specimen Requirements

5-7 ml of whole blood in a green top (sodium heparin) tube OR plasma can removed from spun down sample and sent frozen. A minimum of 0.5 ml of plasma is requested if sending separated.

Transport Instructions

Whole blood should be sent over overnight at ambient temperature. Plamsa can be removed once the sample has been drawn and sent frozen on dry ice. Do not freeze whole blood.

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Have Questions? Need Support?

Call our laboratory at 1-800-473-9411 or contact one of our Laboratory Genetic Counselors for assistance.
Robin Fletcher, MS, CGC
Falecia Thomas, MS, CGC
Alex Finley, MS, CGC