77161-8
LOINC Code
| LOINC code | 77161-8 | |
|---|---|---|
| name | ||
| description | Tests for congenital or secondary deficiency of prothrombin (also called FII or factor II) by measuring prothrombin activity in patient plasma using a modified prothrombin time test (PT). Patient plasma is diluted and then added to a plasma deficient in prothrombin. Correction of the clotting time of the deficient plasma is proportional to the concentration (% activity) of that factor in the patient plasma, interpolated from a calibration curve. Prothrombin is a vitamin-K dependent plasma protein made in the liver and circulated in plasma. Congenital deficiency is very rare and usually causes minor bleeding. Secondary disorders are liver diseases, hyperfibrinolysis, disseminated intravascular coagulation (DIC), oral anticoagulant therapy, or vitamin-K deficiency. This term was created for, but not limited in use to, the HemolL Factor II deficient plasma test kit. Results may be expressed in % activity, IU/ml, or seconds. | |
| status | ACTIVE | |
Fully-Specified Name | ||
| component | Prothrombin.activity^immediately after addition of factor II depleted plasma | |
| property | ACnc = Arbitrary 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 | Coag = Coagulation Assay: To distinguish coagulation assays based on clotting methods that test function/activity from Immune methods that detect the presence of clotting factors and may or may not be functional assays. | |
Additional Names | ||
| short name | 2; Activ; Actvty; Arbitrary concentration; Clot; Clottable; COAGULATION; Coagulation assay; Coagulation factor II; Fac; Fact; Factor 2; Factor II; Factor II activity; FII; FII activity; Hematology; Heme; imm FII DP; Immediatedly after 1:1 addition of; Mov | |
Basic Attributes | ||
| class | COAG | |
| type | 1 Laboratory | |
| order vs. observation | Prothrom imm FI | |
| example UCUM units | IU/mL 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 | 2.52 | |
| last change type | MIN - change to field other than name | |
| change reason | [IU]/mL | |
Related Names | ||
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