Vitamin K [36585X]

Test Code

CPT Codes

Preferred Specimen
3 mL plasma collected in an EDTA (lavender-top) tube

Minimum Volume
1.5 mL

Other Acceptable Specimens
Plasma collected in: lithium heparin (green-top) tube

Separate and freeze immediately in plastic screw-cap vial. Wrap sample in foil before sending to lab. No disclaimer is required.

Note: Samples received frozen but not protected from light are acceptable. Samples received refrigerated but not protected from light are unaccpetable and should be rejected.

Transport Container
Plastic screw-cap vial, protected from light

Transport Temperature

Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 90 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature • Received refrigerated • Serum

High Performance Liquid Chromatography (HPLC)

This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Reference Range
80-1160 pg/mL

Clinical Significance
Differential diagnosis of coagulation disorders.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.