80658-8
LOINC Code
| LOINC code | 80658-8 | |
|---|---|---|
| name | ||
| description | This is a point-of-care electrochemical assay that measures venous or arterial whole blood activated clotting time (ACT) by using a Celite clot activator, which stimulates the intrinsic coagulation pathway. Celite is the commonly-used brand name of the diatomaceous earth (a naturally occurring, soft, siliceous sedimentary rock) used in ACT assays. Different activators result in different clotting times. For example, the ACT reference ranges for glass, kaolin and Celite are 110-190 sec, 90-150 sec and 100-170 sec, respectively. [http://www.practical-haemostasis.com/Miscellaneous/Miscellaneous%20Tests/act.html] In addition, aprotinin may affect the ACT result when Celite is used, therefore, the test is not recommended for use with patients receiving aprotinin. The ACT is primarily used to monitor a patient's state of anticoagulation due to heparin that is administered during a medical or surgical procedure. It is commonly employed in cardiac catheterization, percutaneous transluminal coronary angioplasty (PTCA), renal dialysis, hemodialysis, and extra-corporeal circulation during bypass. This term was created for, but not limited in use to, the submitter's Abbott Celite activated clotting time test kit. | |
| status | ACTIVE | |
Fully-Specified Name | ||
| component | Activated clotting time | |
| property | Time = Time Duration | |
| 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.diatomaceous earth induced | |
Additional Names | ||
| short name | ACT; Activ; Activated coagulation time; Blood; Celite; Clot; Clot tm; Clottable; Coag.celite; COAGULATION; Coagulation activated; Coagulation assay; Coagulation time; Hematology; Heme; Point in time; QNT; Quan; Quant; Quantitative; Random; Rate; R-time; T | |
Basic Attributes | ||
| class | COAG | |
| type | 1 Laboratory | |
| order vs. observation | ACT Bld Diatoma | |
| example UCUM units | s 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 | 2.82 | |
| last change type | NAM - change to Analyte/Component | |
| change reason | s | |
Related Names | ||
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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