LOINC Code 80892-3: Heparin unfractionated Heparin protamine titration Qn (Bld)

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Heparin.unfractionated. It is commonly used with the system or sample type Bld.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Both
• Method: Heparin protamine titration

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Heparin unfractionated [Units/volume] in Blood by Heparin protamine titration
• Heparin.unfractionated
• The heparin assay measures the patient's actual circulating concentration of unfractionated heparin in a sample of fresh whole blood by using titration with known quantities of protamine in individual assay channels. The channel whose quantity of protamine neutralizes the heparin in the test sample will have the shortest clotting time, and the concentration of heparin is calculated based on the known amount of protamine in that channel. The heparin concentration is used along with the activated clotting time in the cardiac OR to give a more complete picture of the patient's heparin anti-coagulation status. Using this test, the clinician/perfusionist knows how much heparin is present, and how much additional heparin is needed during the procedure, and the amount of protamine sulfate that is required to reverse the remaining heparin in the patient at the end of the procedure. This term was created for, but not limited in use to, the submitter's Medtronic HMS Heparin Assay test kit.
• Arbitrary concentration; Blood; COAGULATION; Hematology; Heme; Hep; Hepar; Heparn; HPT; Point in time; QNT; Quan; Quant; Quantitative; Random; UFH; WB; Whole blood

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions