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Vanderbilt Pathology Laboratory Services

Test Directory



HOMOCYSTEINE, TOTAL (HCB)

Department: Toxicology
Test Synonym(s): HCB
CPT Codes: 83090
Methodology: CMIA
Reference Range: 5 - 15 mcmol/L
Tube Type: Lavender top (EDTA)
Specimen: Blood
Pediatric Requirements: 1 lavender top bullet
Volume: 2 mL blood
Minimum Volume: 0.25 mL plasma
Temperature: Refrigerated
Stability: Refrigerated: 7 days
Reasons for Rejection: Hemolysis; improper collection, EDTA tube not stored on ice/separated from cells for more than 6 hours


Days Performed: Monday - Saturday
Times Performed: Batch analyzed at 10:30 a.m. Not available STAT
TAT: Same day
Special Instructions: Fasting specimen. Deliver to the lab immediately. Centrifuge, separate and refrigerate immediately.

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