Pathology Handbook

Lupus anticoagulant screen

Synonyms

Lupus; LA

Clinical Indications

Second Trimester spontaneous abortion/unexplained/recurrent DVT or CVA / Thrombocytopenia with thrombotic complications

Test includes

Coagulation screen, Dilute Russell's Viper Venom Time (DRVVT) Dilute PT time and ratio of APTTs

Request Form 

Request on ICE

Availability

Mon - Fri 9AM to 5PM

Specific Criteria

On request

Patient Preparation

Patient should ideally be at rest and not in acute phase reaction

Turnaround Time

Same day

Specimen

Citrated blood

Volume

Fresh citrated Blood (within 2 hours of collection)

Container

Blue-capped vacutainer tubes

Vacutainer blue top

Collection

Samples should be taken with minimal stasis and taken to the laboratory as soon as possible.

Causes for Rejection

Under-filled, clotted or haemolysed samples

Reference Range

Not applicable