Amino Acids, Plasma, Quant

Message

Sendout, Mayo test code: AAQP

Test Code

LAB811

Alias/See Also

Inborn Errors of Metabolism
AAQP

CPT Codes
82139

Preferred Specimen

0.5 mL plasma from a dark green tube (sodium heparin)

Patient Preparation
Fasting (overnight preferred, 4 hours minimum). Infants should be drawn just before next feeding (2-3 hours without total parenteral nutrition, if possible).

Minimum Volume

0.3 mL

Other Acceptable Specimens

EDTA, PST, lithium heparin

Instructions

1. Collect specimen and place on wet ice. Note: Thrombin-activated tubes should not be used for collection.
2. Centrifuge immediately or within 4 hours of collection if the specimen is kept at refrigerated temperature.
3. Being careful to ensure that no buffy coat is transferred, aliquot plasma into a plastic vial and freeze.

Transport Temperature

Frozen

Specimen Stability

Frozen: 14 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Hemolysis: Mild OK; Gross OK
Lipemia: Mild OK; Gross OK
lcterus: Mild OK; Gross OK
Thrombin-activated tube.

Methodology
Quantitative Analysis by Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

FDA Status
Approved

Setup Schedule

Monday through Friday

Report Available

3-5 days

Limitations

Reference values are for fasting patients.

Reference Range

Included with report

Clinical Significance

Evaluating patients with possible inborn errors of metabolism using plasma specimens.

May aid in evaluation of endocrine disorders, liver diseases, muscle diseases, neoplastic diseases, neurological disorders, nutritional disturbances, kidney failure, and burns.

Performing Laboratory
Mayo Clinic Laboratories, Rochester, Minnesota

Additional Information
Amino Acids, Quantitative, Plasma

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.