Days Set Up
Monday and Thursday
Analytic Time

3 hours

MiChart Code
Lupus Anticoagulant
Soft Order Code
LASAY

Test Updated:

Synonyms

LLA
Antiphospholipid Antibody (Lupus Anticoagulant)
Circulating anticoagulant
LA Screen
Lupus inhibitor
Lupus Test
Lupus-like anticoagulant
Phospholipid Antibody (Lupus Anticoagulant)
LA ASSAYS
LUPUS ANTICOAGULANT ASSAYS
DRVVT PT
DRVVT RAT
LA CONFIRM
PTT
TTI 1:100
TTI 1:1000
HEXAG
DRVVT PATIENT SECONDS
DRVVT RATIO
PARTIAL THROMBOPLASTIN TIME
TTI RATIO 1:100
TTI RATIO 1:1000
Tissue Thromboplastin Inhibition Test
Dilute Russell's Viper Venom Test
LAC Factor
Hexagonal Phospholipid Neutralization
Lupus-Like Anticoag Consult
LASAY

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

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Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology

See individual tests.

Test Usage

Detection of lupus anticoagulant.

Reference Range

Interpretive report provided for abnormal results

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Offsite Collection Instructions

Collect specimen in a blue top (citrate 3.2%) tube. Mix by inversion. Specimen should arrive at lab within 3 hours of collection; transport at room temperature. Alternatively, centrifuge, aliquot plasma into a plastic tube, and freeze the specimen within 4 hours of collection. Transport frozen specimen on dry ice. Collection of the blood through lines that have been previously flushed with heparin should be avoided. If the blood must be drawn through a VAD (vascular access device), the line should be flushed with 5 mL of saline and the first 5 mL of blood or six dead space volumes of the VAD discarded.

Please provide clinical history (brief description of the reason for testing, e.g., history of easy bruising and menorrhagia, family history of von Willebrand disease) and a listing of current and recent medications, including oral contraceptives, anticoagulants, and factor replacement therapy/DDAVP.

Blue Top Tube
Normal Volume
Full 2.7mL tube or 1mL plasma aliquot
Minimum Volume
Full 1.8mL tube or 1mL plasma aliquot

Billing Information

CPT Code
85613, 85732, 85610, 85730
Pro Fee Code
 
Insurance Auth Info
 
LOINC
 

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.