Use the rolodex controls or search box below to find tests. You can enter a test name, CPT code, test code, or alias in the search box.
| Test Name: | Homocyst(e)ine, Plasma |
|---|---|
| Test Code: | 706994 |
| Other Names: | N/A |
| Test Includes: | Homocyst(e)ine, Plasma |
| Specimen Requirements: | Plasma PREFERRED; serum is acceptable., 2 mL |
| Container: | Lavender-top (EDTA) tube, green-top (Heparin) tube, red-top tube, or gel-barrier tube |
| Collection Instructions: | Separate plasma or serum from cells immediately to avoid a false elevation of homocysteine. After one hour at room temperature, a 10% increase may be seen. Transfer plasma or serum to a plastic transport tube (See Causes for Rejection). Homocysteine results increase by approximately 35% and 75% for samples not centrifuged and/or not separated from the clot for periods of four and 24 hours, respectively. Serum values are expected to be higher than plasma values. Slightly higher values are observed in nonfasting patients. |
| Stability: | Refrigerate Stability: Room temperature 14 days Refrigerated 14 days Frozen 6 months |
| Rejection Criteria / Special Instructions: | N/A |
| Methodology: | Enzymatic |