ARUP's Laboratory Test Directory
| 0030224: Prothrombin Time/International Normalized Ratio |
| Test Mnemonic: PT INR | |
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Methodology: Electromagnetic Mechanical Clot Detection
Performed: Sun-Sat Reported: 1-2 days |
| Specimen Required: | |
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Collect: One 5 mL lt. blue (3.2% sodium citrate).
Transport: 1 mL platelet-poor plasma, frozen. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube. Unacceptable Conditions: Serum. Nonfrozen, clotted, or hemolyzed specimens. Stability: Ambient: 24 hours; Refrigerated: 24 hours; Frozen: 1 week |
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| Reference Interval: | |||||||||
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| Note: | |
| Reference intervals established using 3.2% sodium citrate. |
| CPT Code(s): | |
| 85610 |