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0030215
Prothrombin Time
PT
Ordering Recommendation
Initial test for suspected bleeding disorder.
New York DOH Approval Status
This test is New York state approved.
Specimen Required
Patient Preparation
Collect
Light blue (sodium citrate). Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling guidelines.
Specimen Preparation
Transfer 1 mL platelet-poor plasma to an ARUP standard transport tube. (Min: 0.5 mL)
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Unacceptable Conditions
Serum or EDTA plasma. Clotted or hemolyzed specimens.
Remarks
Stability
Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 2 weeks
University of Utah Clients: Ambient: 24 hours; Refrigerated: Unacceptable; Frozen: 2 weeks
Methodology
Electromagnetic Mechanical Clot Detection
Performed
Sun-Sat
Reported
1-2 days
Reference Interval
12.0-15.5 seconds
Interpretive Data
Compliance Category
FDA
Note
Reference intervals established using 3.2% sodium citrate.
Hotline History
N/A
CPT Codes
85610
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 0030220 | Prothrombin Time | 5902-2 |
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
- PT
- Prothrombin Time, Plasma
- Protime
Prothrombin Time
