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Coagulation tests measure blood's ability to clot, and how long it takes to clot. Testing helps a clinician to assess the risk of excessive bleeding or developing clots (thrombosis) in their patient’s blood vessels.
For any questions regarding the tests offered or how to order, please contact us here.
| CPT CODE | Panel/Test | Patient Preparation | Collection Info | Specimen Type | Unacceptable Conditions | Volume – Preferred | Volume – Minimum | Storage | Stability | Methodology | Critical/Panic Value | Reference Values: | Comments |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 85610 | Prothrombin Time | None | Sodium Citrate – Lt Blue | Plasma | Serum or anticoagulant other than sodium citrate. Hemolysed specimen. | 1mL | 0.5mL | CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. | Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 2 weeks | Electromagnetic Mechanical Clot Detection | > 36.9 seconds | 12.0-15.5 seconds | (none) |
| 85730 | PTT, Activated (aPTT) | None | Sodium Citrate – Lt Blue | Plasma | Serum or anticoagulant other than sodium citrate. Hemolysed specimen. | 1mL | 1mL | CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. | Ambient: 4 hours; Refrigerated: Unacceptable; Frozen: 2 weeks | Electromagnetic Mechanical Clot Detection | >99.9 seconds | 24-35 seconds | NOTE: Specimens from patients on heparin must be centrifuged within 1 hour of collection and ambient stability is reduced to 2 hours. |
| 85610 | INR | None | Sodium Citrate – Lt Blue | Plasma | Serum or anticoagulant other than sodium citrate. Hemolysed specimen. | 1mL | 0.5mL | CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. | Ambient: 24 hours; Refrigerated: Unacceptable; Frozen: 2 weeks | Electromagnetic Mechanical Clot Detection | > 4.9 seconds | 2.0-3.0 conventional anticoagulation; 2.5-3.5 intensive anticoagulation | (none) |
SST = Serum Separator Tube
PST = Plasma Seperator Tube
T — (877) 879-1815
F — (503) 206-6939
10101 SW Barbur Blvd
Suite 200
Portland, OR 97219
Monday-Friday
8:00am-6:30pm
Excluding the following holidays: New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day.
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