PTT circulating inhibitor [Presence] in Platelet poor plasma 50391-2
LOINC Code
| LOINC code | 50391-2 | ||
|---|---|---|---|
| name | PTT circulating inhibitor [Presence] in Platelet poor plasma | ||
| description | PTT (aPTT) circulating inhibitor is part of the PTT mixing study. When addition of normal plasma fails to correct the clotting time into the normal range, the cause of the abnormal test is likely an inhibitor rather than a clotting factor deficiency. | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | Coagulation surface induced circulating inhibitor | ||
| property | PrThr = Present or threshold: The Property PrThr stands for “Presence or Threshold”, meaning either a) the actual presence or absence of an analyte, or b) that the amount of analyte detected is over some predetermined threshold. | ||
| 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 | Ord = Ordinal: Ordered categorical responses, e.g., 1+, 2+, 3+; positive, negative; reactive, indeterminate, nonreactive. | ||
| method | |||
Additional Names | |||
| short name | PTT circulating inhib PPP Ql | ||
Basic Attributes | |||
| class | COAG | ||
| type | 1 Laboratory | ||
| order vs. observation | Observation | ||
Associated Observations | |||
LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations. | |||
History/Usage | |||
| test rank | 18740 of 2000 most commonly performed tests by labs in USA | ||
| first released | |||
| last updated | 2.73 | ||
| last change type | MIN - change to field other than name | ||
| change reason | Changed Property from "ACnc" to "Pr" (Presence) to clarify that results (e.g. pos/neg, present/absent) are based on the presence of the inhibitor.; The PrThr property is used for LOINC terms whose results are reported using an ordered categorical scale, regardless of whether or not an internal threshold was used to make that determination. This change was approved by the Laboratory LOINC Committee in June 2016. | ||
Related Names | |||
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