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Test & Collection Guide

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ALL

Lupus Anticoagulant Screen

Alternate names:
LA, LAC
Laboratory:
Coagulation
Test Code:
LAS
Specimen types:
Plasma
Container types:
Sodium CitrateSodium Citrate
Collection Instructions:

Notification of anticoagulant therapy is essential

One (1x) Sodium citrate tubes is required. Do not use 1 ml citrate tubes.

Filled to label marker and mixed by inversion

The patient must not be receiving heparin

Unspun sample is stable for up to 4 hours and must be transport to laboratory immediately. (Sample must be double spun, aliquoted and frozen within 4 hours from time of collection).

 

Tests performed:

INR, APTT, APTT Mix, Silica Clotting Time and Dilute Russell's Viper venom time (LA screen/Confirm).

 

Frequency:
Weekly
Result Turnaround Time:
2 weeks
Reference Interval:

LA screen   <1.2 Lupus anticoagulant not detected.

LA Confirm <1.2 Lupus anticoagulant not detected

                    1.2 - 1.5 L.A. weakly present

                    1.5 - 2.0 L.A. moderately present.

                     >2.0      L.A. strongly present

                                                

Laboratory Use Only

  

Accessing Results

EMR: Pathology results are available via EMR.

Auscare: If EMR is unavailable, results can be accessed through Auscare. Don’t have an Auscare login? Complete the Auscare User Form.

To access Auscare, see instructions.

 

Forms & Collection Guides

Consent Form – Non-Medicare Tests
For tests not covered by Medicare. Download Form  

Pathology Request Form
Printable referral form for submitting pathology requests. Download Form.

Microbiology Swab Collection Guide 
Step-by-step instructions for correct swab collection. Download Guide.

Preferred Order of Draw
Instructions to ensure accurate blood collection and results. View Instructions 

 

Feedback

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