Test Code: Lupus Preferred Name Lupus anticoagulant studies

Special request by phone
1 week
Medicare Item

Test Tubes

ImageSpecimen TypeSpecimen VolumeTube Type
Blood (adult)5.4 mL2x Sodium Citrate 2.7 ml (Solid Pale Blue Top)
Blood (paediatric)1.8 mLSodium Citrate 1.8 mL Paed (Clear/Pale Blue Inner)


Accurate filling of specimen tube essential.
Specimens must be transported at room temperature to the Laboratory in a red specimen bag ASAP. (Maximum delay to testing laboratory must not exceed 2hrs)
If the lupus testing is part of a thrombotic profile, please ensure private patients fill out questionnaire (see below) for billing purposes. If part of a thrombotic profile,   Lupus testing will not proceed without the relevant paperwork.


Private patients must fill out Patient Questionnaire for Thrombophilia Screen  (SI-A 136) or an out-of-pocket expense may be incurred.

Indications for testing for Lupus Anticoagulant (LA) include: 1.) Patient suspected of having antiphospholipid syndrome; 2.)An incidental finding of a prolonged aPTT.

[Antiphospholipid syndrome should be considered in patients (especially those who are younger) with venous thrombosis, arterial thrombosis, or recurrent pregnancy loss.]
Lupus screen utilises two methodologies -  Russell Viper Venom test (dRVVt) and a lupus sensitive APTT.
A positive result should be CONFIRMED at least 12 weeks apart

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