81639-7
LOINC Code
| LOINC code | 81639-7 | ||
|---|---|---|---|
| name | |||
| description | The heparin dose response slope is a measure of the increase in the clotting time of fresh whole blood as the heparin concentration is raised to a known value. The slope is measured in seconds of increase/unit of heparin/mL of blood volume. | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | Heparin dose response slope | ||
| property | Arb = Arbitrary | ||
| 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 | Bld = Whole blood | ||
| 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 | Arbitrary; Blood; Clot; Clottable; COAGULATION; Coagulation assay; Hematology; Heme; Hep; Hep dose resp slope; Hepar; Heparn; Point in time; QNT; Quan; Quant; Quantitative; Random; Tilt tube; WB; Whole blood | ||
Basic Attributes | |||
| class | COAG | ||
| type | 1 Laboratory | ||
| order vs. observation | Hep dose resp s | ||
| example UCUM units | sec/U/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) | ||
Member of these Panels | |||
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History/Usage | |||
| first released | |||
| last updated | 2.56 | ||
| last change type | ADD - added | ||
| change reason | s/U/mL | ||
Related Names | |||
| hierarchy paths | LOINC Home {component} LP432695-7 Laboratory LP29693-6 Coagulation LP7788-5 Platelet Function LP31621-3 Heparin LP15998-5 Heparin dose response slope LP212283-8 Heparin dose response slope | Blood | Coagulation LP393941-2 LOINC Home {component} LP432695-7 Laboratory LP29693-6 Coagulation LP7788-5 Routine LP31624-7 Activated clotting time LP15960-5 Heparin dose response slope LP212283-8 Heparin dose response slope | Blood | Coagulation LP393941-2 | ||
Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.
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