HOMOCYSTEINE, QUANTITATIVE, URINE

Specimen Required
Void and discard the first morning urine following an overnight fast. Continue fasting and collect the next random urine specimen. Send 4.0 mL uirne (2.5 mL minimum) refrigerated in a screw-capped pastic vial.

Rejection Criteria
Urine with preservative

Methodology
Liquid Chromatography - Tandem Mass Spectometry
Stable Isotope Dilution Analysis

Stability
Room Temperature: Unacceptable; Refrigerated: 7 days; Frozen: 1 month

Reference Range
Adults: 0-9 mcmol/g creatinine

Performed
Monday-Saturday

Turnaround Time4-6 days
Test CodeUHOMC
CPT-4 Code (s)
83090
LOINC Codes
Homocystine, Quant-Urine:   32616-5  

Warde
Medical
Laboratory