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| Test Name: | Vitamin K1 |
|---|---|
| Test Code: | 121200 |
| Other Names: | N/A |
| Test Includes: | Vitamin K1 |
| Specimen Requirements: | Serum or plasma, FROZEN and PROTECTED FROM LIGHT, 1.5 mL |
| Container: | Lavender-top (EDTA) tube, red-top tube without anti- coagulant, or amber plastic transport tube with amber top. (If amber tubes are unavailable, cover standard transport tube completely, top and bottom, with aluminum foil. Identify specimen with patient's name directly on the container AND on the outside of the aluminum foil. Secure with tape.) For amber plastic transport tube and amber-top, order LabCorp ID 23598. |
| Collection Instructions: | Draw blood in chilled lavender-top tubes containing EDTA or in chilled red-top tubes with no anticoagulant. Gently invert five to six times to mix if using anticoagulant tube. Keep unopened vacuum tube on ice before processing. Immediately separate plasma/serum from red cells using refrigerated centrifugation or prechilled centrifuge carrier tubes before centrifuging. Serum or plasma must be separated from cells within 45 minutes of venipuncture. Transfer serum or plasma specimen to a labeled amber transport tube and freeze on dry ice. PROTECT FROM LIGHT. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested. |
| Stability: | FREEZE serum or plasma on dry ice in plastic amber transport tube with amber top. Not stable refrigerated. PROTECT FROM LIGHT. Stable up to three months at -20(degrees)C. |
| Rejection Criteria / Special Instructions: | N/A |
| Methodology: | High-pressure liquid chromatography (HPLC) with electrochemical (EC) detection |