Assay

PIVKA II and vitamin K levels

Key Words

PIVKA II, Vitamin K, Undercarboxylated prothrombin

Specimen Collection

2x 4.7ml Clotted samples. Must be transported in the dark. Discuss with laboratory before taking samples.

Referral

This test is referred to another centre for analysis: 

Nutristasis Unit

Haemostasis and Thrombosis

Viapath

4th floor, North Wing

St Thomas' Hospital

Westminster Bridge Road

London 

SE1 7EH

Turnaround time

10 days from receipt at reference laboratory

Test indications

Marker of vitamin K status. Used to detect the presence of vitamin K antagonists such as warfarin or rodenticide superwarfarins (e.g. difenacoum).

Interferences

Contact referral laboratory for information

Reference Range

Contact referral laboratory for information

Minimum retesting interval

N/A