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Laboratory:

Clinical Biochemistry (METABOLIC)

Test Name:

AMINO ACIDS, QUANTITATIVE - (U)

Test Code: AAQU

Clinical Information:

Test Indications:

Evaluation of patients with suspected inborn errors of amino acid metabolism.

Monitoring patients with aminoacidopathies.

Collection Devices:

Preferred Device:	2 - Urine Collection 12 mL Tube Urine Collection 12 mL Tube Manufacturer: Sarstedt Canada Inc. (vendor) Catalogue #:
Alternate Device:	1 - Urine Collection Container, Leak-Proof Random 100mL Urine Collection Container, Leak-Proof Random 100mL Manufacturer: Kendall, A Tyco International Co. Catalogue #: 2205 SA

Specimen Required:

Urine: 10.0 mL

Pediatric Urine: 1.0 mL

Collection Information: Urine should be prepared in two aliquots: one aliquot for Amino Acid testing frozen immediately and another aliquot refrigerated for creatinine testing.

Frozen urine in the original 100 mL container SHOULD NOT be SHIPPED. Only ship frozen aliquots.

Specimen Stability:

Ambient: Not stable

Refrigerated: 4 hours (excluding thiol-containing amino acids. See CYSTINE, Urine - (U))

Frozen: 14 days at -20C or 60 days at -80C

Referral:

Urine: 10.0 mL

Pediatric Urine: 1.0 mL

Store and ship aliquots frozen. Thawed samples are not suitable for testing.

Additional aliquot must be shipped for urine creatinine.

Only ship frozen aliquots.

Send specimen to Health Sciences Centre – MS5 (Biochemical Genetics)

Requisition:

_SH Biochemical Genetics Laboratory Requisition (R250-10-69)

Reference Values:

A descriptive report will be sent.

Method of Analysis: Liquid Chromatography Tandem Mass Spectrometry

Availability:

Within 1 Week