ARUP's Laboratory Test Directory
| 0030010: Antithrombin, Enzymatic (Activity) |
| Test Mnemonic: AT3 | |
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Methodology: Chromogenic Assay
Performed: Sun-Sat Reported: 1-2 days |
| Specimen Required: | |
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Collect: One 5 mL lt. blue (lt. blue, sodium citrate). (Min: 3 mL) Refer to the Hemostasis/Thrombosis Specimens section in the front of this User's Guide for specimen collection instructions.
Transport: 1.5 mL platelet-poor plasma, frozen. (Min: 1 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 1 mL platelet-poor plasma, frozen. Unacceptable Conditions: Serum. Nonfrozen or hemolyzed specimens. Stability: Ambient: 4 hours; Refrigerated: 4 hours; Frozen: 2 weeks |
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| Reference Interval: |
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1-4 days: 39-87% 5-29 days: 41-93% 30-89 days: 48-108% 90-179 days: 73-121% 180-364 days: 84-124% 1-6 years: 82-139% 7-9 years: 96-135% 10-11 years: 92-134% 12-13 years: 92-128% 14-15 years: 95-135% 16-17 years: 94-131% 18 years and older: 76-128% |
| CPT Code(s): | |
| 85300 |