ARUP's Laboratory Test Directory
| 0099869: Homocysteine, Total |
| Test Mnemonic: HOMOCY-QNT | |
|
Methodology: Enzymatic
Performed: Sun-Sat Reported: Within 24 hours |
| Specimen Required: | |
|
Collect: One 5 mL green (sodium or lithium heparin) or SST.
Transport: 1 mL plasma or serum at 2-8°C. (Min: 0.3 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 0.2 mL plasma or serum at 2-8°C. Remarks: Fasting specimen is preferred. Plasma or serum must be separated from cells within one hour of collection. If specimen cannot be separated from cells within one hour, store specimen on ice. Unacceptable Conditions: Sodium citrate. Stability: Ambient: 1 hour; Refrigerated: 1 week; Frozen: 3 months |
|
| Reference Interval: |
|
Male: 4-12 µmol/L Female: 4-10 µmol/L |
| Interpretive Data: | |
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Plasma total homocysteine (tHcy) is a graded risk factor for cardiovascular disease. The risk increases progressively with homocysteine concentration. Maintenance of homocysteine levels below 15 µmol/L is recommended. Note: False elevations of plasma or serum homocysteine may occur if the plasma or serum is not promptly separated from the cells at the time of collection. This test is performed pursuant to an agreement with Competitive Technologies, Inc. |
| CPT Code(s): | |
| 83090 |