Direct Oral Anticoagulant Screen
General Information
Lab Name
Direct Oral Anticoagulant Screen
Lab Code
DOASP1
Epic Name
Direct Oral Anticoagulant Screen
Description
The DOAC screen is intended to rapidly identify patients who may be taking direct oral anticoagulants. This information may be useful in making decisions about performing surgery or treating with fibrinolytic agents. The thrombin time will detect direct thrombin inhibitors, while Direct Xa Inhibitor Screen will detect direct Xa inhibitors. Please contact the laboratory medicine resident on call if there are questions.
Synonyms
Anti 10A, Anti10A screen, AntiXa, Anti Xa, Anti-Xa screen, DOAC screen
Components
| Code | Name |
|---|---|
| TTPAT | Thrombin Time |
| DOXAS | Direct Xa Inhibitor Screen |
Interpretation
Method
Stago Clot-based Thrombin Time and STA Liquid Anti-Xa Chromogenic Assay
Reference Range
See individual components
Ordering & Collection
Specimen Type
Collection
3 or 5 mL Citrated BLUE TOP tube
Handling Instructions
Specimen must be processed by Lab within 4 hours of collection.
Quantity
requested: Entire sample
minimum: 1.0 mL plasma
Processing
Take specimen immediately to Coag Lab.
Outside labs: Centrifuge for 10 minutes, remove plasma and respin plasma for another 10 minutes. Decant and Freeze plasma (minimum 1.0 mL) at -20° to -80°C. Send frozen on ice.
Performance
LIS Dept Code
Coagulation (COAG)
Performing Location(s)
| HMC |
Coagulation
206-520-4600 325 9th Ave, Rm # GWH-47, Seattle, WA 98104-2420 |
|
|---|---|---|
| UW-NW |
Main Lab
206-668-1344 UW Medical Center – Northwest |
|
| UW-MT |
Coagulation
206-520-4600 Clinical Lab, Room NW220, |
Frequency
Daily
Available STAT?
Yes