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HelpTest Code MIXSDY Mixing Studies (Coagulation Inhibitors), Blood, LAB2614
Methodology
Clot Based Assay
Performing Laboratory
St. Luke's Hospital Cedar Rapids
Specimen Requirements
Container/Tube:
Preferred: 3 Full blue-top (sodium
citrate) 1.8mL tube-Hemolyzed or short draw specimen
is not acceptable.
Specimen: minimum volume: 2.0mL
plasma
Stability: Specimens at 18-20°C must be tested within 4 hours of specimen collection
Transportation: Centrifuge, aliquot and freeze the specimen at -20°C. Stable for up to 2 weeks.
NOTE: Patient cannot be on heparin or Coumadin.
NOTE: Patients with a hematocrit of >55% must be recollected using an altered amount of sodium citrate.
Reference Values
Refer to Protime and PTT for reference values
Day(s) Test Set Up
Monday through Friday (days only)
Test Classification and CPT Coding
85610-PT
85611-PT mix
85730-APTT
85732-APTT mix
Useful For
The presence of acquired circulating anti-coagulants is commonly associated with certain disease entities, ingestion of drugs, and other clinical situations. Acquired inhibitors can occur in patients with non-congenital deficiencies.
Report Available
1-2 days.