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Test Code
TRLUA
Test Name
Thrombotic Risk, Acquired, Lupus Anticoagulant
CPT Codes
85613, 85730
Included Tests
  • Lupus Sensitive PTT
  • DRVVT Screen
  • Interpretation

Reflexed when appropriate:

  • DRVVT Confirm
  • Hex Phase Phospholipid
  • PTT Mixing Study
  • Reptilase Time
Expected Turnaround Time
1 - 4 days
Clinical Utility

Detect lupus anticoagulants.
Specimen and Container Info

Specimen Type: Plasma

Collection Container: 4 Light Blue Top (Sodium Citrate)

Minimum Volume: 2 mL plasma from 2 full tubes
Collection Instructions

Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate. Evacuated collection tubes must be filled to completion to ensure a proper blood-to-anticoagulant ratio.

Processing and Submission Instructions

Create platelet poor plasma according to the Specimen Collection and Processing Guidelines for Coagulation Testing.

Patient Preparation
Testing is contradictory for patients on anticoagulant therapy.
Transport Instructions

Transport to the laboratory frozen. 
Stability Requirements

Frozen

Platelet poor plasma: 14 days
Causes for Rejection
  • Specimen thawed in transit
  • Sample past stability
Methodology
See Individual Test Listing
Reference Intervals

See indvidual test listings
Performing Location
Roble Road Core Laboratory
Alternate Names
  • Lupus Sensitive PTT
Testing Schedule
Routine, Monday - Friday no holidays
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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