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Test Code LACASC Lupus Anticoagulant Cascade

Important Note

Patient should not be on anticoagulation or acute phase/current clot at the time of collection.

Please specify if the patient is having an acute thrombosis.

This testing includes Thrombin Time, Qualitative Anti Xa, and the LA Cascade Summary, which is a pathology interpretation.

Testing Always performed? Comments
Thrombin Time Yes Initial testing
Qualitative Anti Xa Yes Initial testing
LA Cascade Summary Yes Pathology Interp.
Protime/INR No Reflex-only test
DVV True Ratio No Reflex-only test
SCT True Ratio No Reflex-only test
DVV Screen Mix Time No Reflex-only test
DVV Screen Mix Ratio No Reflex-only test
DVV Confirm Mix Time No Reflex-only test
DVV Confirm Mix Ratio No Reflex-only test
SCT Screen Mix Time No Reflex-only test
SCT Screen Mix Ratio No Reflex-only test
SCT Confirm Mix Time No Reflex-only test
SCT Confirm Mix Ratio No Reflex-only test
Dilute Russell Viper Venom Time No Reflex-only test
Dilute Russell Viper Venom Time Confirm No Reflex-only test
Silica Clotting Time No Reflex-only test
Silica Clotting Time Confirm No Reflex-only test
Qualitative Anti Xa Hepzymed No Reflex-only test

Specimen Information

Container Specimen Temperature Collect Vol Submit Vol Min Vol Stability
Blue Top Platelet Poor Plasma   4 mL 2 mL 0.6 mL 14 days
Frozen 3 tubes Full Full 6 Mths
Whole Blood Ambient 3 tubes Full Full 4-Hrs

Note:

*Tubes must be filled to fill line see below.

**Deliver capped whole blood sample at ambient temperature within 4 hours. For delayed delivery send platelet poor plasma in  three separate frozen plasma aliquots of 1mL each for this testing.

 

Instrumentation / Method

TOP750LAS / Clot Based

Test Schedule / Analytical Time / Test Priority

Monday and Thursday / Reported next day / Available STAT, nights and weekends with pathologist approval

Reference Range

See report.

 

CPT / LOINC / Order Code

Meditech Medent LOINC CPT
LACASC LACASC    

 

Initial Testing CPT Code(s)
Thrombin Time 85670
Qualitative Anti-Xa 85520
LA Cascade Summary 85390.26
Reflex-only Testing CPT Code(s)
Protime/INR 85610
DVV True Ratio N/A
SCT True Ratio N/A
DVV Screen Mix Time 85613
DVV Screen Mix Ratio N/A
DVV Confirm Mix Time 85613
DVV Confirm Mix Ratio N/A
SCT Screen Mix Time 85732
SCT Screen Mix Ratio N/A
SCT Confirm Mix Time 85732
SCT Confirm Mix Ratio N/A
Dilute Russell Viper Venom Time 85613
Dilute Russell Viper Venom Time Confirm 85613
Silica Clotting Time 85732
Silica Clotting Time Confirm 85732
Qualitative Anti Xa Hepzymed 85520, 85525