91120-6
LOINC Code
| LOINC code | 91120-6 | |
|---|---|---|
| name | ||
| description | This term represents an antithrombin (AT) assay which, in contrast to typical AT assays, is performed in the ABSENCE of heparin. This assay is also known as "Progressive antithrombin assay." It is used to identify type IIb AT deficiency, which is caused by a mutation in the AT heparin binding site (HBS). In type IIb AT deficiency, AT activity is reduced in the presence of heparin but is normal in the absence of heparin.[PMID: 19141163] This term was created for, but is not limited in use to, the Biophen Antithrombin 5 assay's VARIANT Method, which is performed without heparin. In patients with type IIb AT deficiency, AT activity is expected to be normal in patients with an HBS mutation. | |
| status | ACTIVE | |
Fully-Specified Name | ||
| component | Antithrombin | |
| property | RelCCnc = Relative Catalytic Concentration | |
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | |
| system | PPP = Platelet poor plasma | |
| scale | Qn = Quantitative: The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256 | |
| method | Chromo.no addition of heparin | |
Additional Names | ||
| short name | Anti thrombin; Antithrm; Antithrombin III; Antithrombn; Anti-Xa; AT; AT III; ATIII; Chromo.no added heparin; Chromogenic assay; COAGULATION; ENZY; Enzymatic assay; Hematology; Heme; Heparin cofactor I; Plas; Platelet poor plasma; Point in time; QNT; Quan; | |
Basic Attributes | ||
| class | COAG | |
| type | 1 Laboratory | |
| order vs. observation | AT III PPP Chro | |
| example UCUM units | % The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org) | |
History/Usage | ||
| first released | ||
| last updated | 2.65 | |
| last change type | ADD - added | |
| change reason | % | |
Related Names | ||
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