Vitamin K
Test Mnemonic
VITK
CPT Codes
- 84597 - QTY (1)
LOINC ®
9622-2
Aliases
- Vitamin K1
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | SST (Gold) | Frozen | Patient should fast overnight for 12 hours before collection and should not consume alcohol for 24 hours prior to collection. Protect specimen from light. Remove serum from cells within 1 hour of collection |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Plasma | EDTA (Lavender) | Frozen | Patient should fast overnight for 12 hours before collection and should not consume alcohol for 24 hours prior to collection. Protect specimen from light. Remove plasma from cells within 1 hour of collection | |
| 1 mL | Serum | No additive (Red) | Frozen | Patient should fast overnight for 12 hours before collection and should not consume alcohol for 24 hours prior to collection. Protect specimen from light. Remove serum from cells within 1 hour of collection |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.6 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | After separation of cells: Unacceptable |
| Refrigerated | After separation of cells: 1 month |
| Frozen | After separation of cells: 6 months |
Days Performed
Sun - Fri
Turnaround Time
3 - 6 days
Methodology
| Name | Description |
|---|---|
| High Performance Liquid Chromatography (HPLC) |
Reference Range
| Vitamin K | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | 0.22 - 4.88 | nmol/L |
Special Info
Draw sample following an overnight (12 hour) fast. Patient should not consume alcohol for 24 hours prior to blood draw.
Clinical Info
Vitamin K concentration is reported as nanomoles per liter (nmol/L). To convert concentration to nanograms per milliliter (ng/mL), multiply the result by 0.45.