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Amino Acids Quantitative by LC-MS/MS, Plasma

Mnemonic

AAQNT

Specimen Collection Requirements

Patient Preparation

Adults: Fasting specimen preferred. Infants and children: Draw specimen prior to feeding or 2-3 hours after a meal.

Collect

Plasma, one 4.0 mL green (sodium or lithium heparin) top tube

Handling

Clinical information is needed for appropriate interpretation. Additional required information includes age, gender, diet (e.g., TPN therapy), drug therapy and family history. CRITICAL FROZEN. Separate from cells ASAP. Separate specimens must be submitted when multiple tests are ordered.

Preferred Volume

0.50 mL

Minimum Volume

0.25 mL (0.60 mL minimum whole blood draw)

Transport

Frozen

Rejection Criteria

Hemolyzed specimens

Stability

AFTER SEPARATION FROM CELLS: Ambient: Unacceptable; Refrigerated: 24 hours; Frozen: 1 month

Testing Information

Performed

Mon - Fri

Reported

3-7 days

Method

Quantitative Liquid Chromatography/Tandem Mass Spectrometry

Referral Lab

ARUP (2009389)

Reference Values

Reference Values

Interpretation provided.

CPT Codes

82139

Last Updated: Monday, September 23, 2019 10:48:13 PM


Client Services: 503-413-1234