LUPUS ANTICOAGULANT (PATIENT NOT ON HEPARIN OR COUMADIN)

General Information

HLAB/HOL Code: PTTLA
UPHSM LIS Test #: 3424
Schedule: Mon, Wed, and Fri
Testing Time: varies
Testing Lab: UP Health System-Marquette

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 6 ml plasma
Temperature: Frozen
Tube Type: Light-Blue Top (Citrate)
Collection Info:
Spin specimen, remove plasma, and spin plasma again.   Place plasma in two plastic vials (3mL in each) and freeze immediately.
     A. Double centrifugation of specimens is critical for accurate results as platelet contamination may cause spurious results.
     B. Patient should not be receiving heparin or coumadin. Anticoagulation therapy should be discontinued 10 - 14 days prior to specimen
          collection in order to obtain meaningful results.

Methods

Photo optical clot detection
Patient's plasma is initially screened with a PTT, PT, and DVVT before going on with a cascade of tests.
Based upon initial screening results the following may be added: Thrombin Time, DVVT Confirmation, Normalized Ratio, DD

Clinical Utilities

Detecting, confirming, or excluding Lupus-like anticoagulant
(LAC) inhibitors. Determing the cause of a prolonged activated
partial thromboplastin time.

Component Info

Name: PT
Method:
CPT Code: 85610
Ref Range: Instrument specific
Comp Units:
Name: PTT
Method:
CPT Code: 85730
Ref Range: Instrument specific
Comp Units:
Name: DVVT
Method:
CPT Code: 85613
Ref Range: Instrument specific
Comp Units: