Laboratory Services

Lupus Anticoagulant with Interpretation

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Updated Test Information:

Test Description
Lupus Anticoagulant with Interpretation
Synonym(s)

Dilute Russell Venom time, DRVVT, LAC, LUPINH, Lupus Inhibitor, UOW2922

Test ID
LUPI
General Information

Clinical assay interference and limitations: Patients on direct thrombin inhibitors such as hirudin (Refludan), bivalirudin (Angiomax), dabigatran (Pradaxa), argatroban (Novastan) or anti-Xa drugs such as rivaroxaban (Xarelto), apixaban (Eliquis) and edoxaban (Savaysa), may interfere with this assay and lead to falsely positive results. For patients on Xa inhibitor, order Hexagonal Phospholipid assay (HEXPI) instead. When clinically indicated, Hexagonal Phospholipid assay (HEXPL) will be reflexively added for diagnosis with an additional charge. NOTE: Results will be reviewed/Interpreted by an MD and a professional fee is billed. If an MD review is not desired, see Lab Mnemonic: LUPN = Lupus Anticoagulant without Interpretation. Outside clients should fill and submit the Coagulation Patient Clinical History Form available below.


 

Container Type

3 or 5 mL Blue Top Tubes

Specimen Type

Plasma

Specimen Requirements

Laboratory must process the blue top tubes, within 4 hours of blood collection.

Specimen Collection / Processing Instructions

Centrifuge Blue tops for 10 minutes, remove plasma & respin plasma for another 10 minutes. Decant and Freeze plasma (minimum 1.0 mL) at -20°C to -80°C. Ship frozen on dry ice.

Minimum Sample Volume

1.0 mL plasma

Department (code)

Coagulation

Methodology

Clottable

Testing Schedule

Monday, Thursday

Test Includes

INT1                Coagulation Interpretation
LUPACG        Lupus Anticoagulant Panel
LUPAC           Lupus Anticoagulant
PROLUP       Prothrombin Time, Coag Study
PTTLUP         APTT, Coag Study
TTLUP            Thrombin Time, Coag Study
FIBLUP          Fibrinogen, Coag Study

CPT Code(s)

85384, 85390, 85610, 85613x2, 85670, 85730

STAT Orderable (Y/N)

No

Performing Lab

UW

LOINC Code(s)
Collection File View/Download File