73817-9
LaboratoryPercent heparin inhibition [Ratio] in Serum
Definition
The percent inhibition by heparin is determined by adding excess heparin (high-dose heparin) to the patient's serum. Testing is performed to increase the specificity of the assay and confirm a positive heparin induced antibody result. Inhibition of a positive result by 50% or more reduction in the optical density is considered confirmatory and characteristic of Type II heparin induced thrombocytopenia (HIT) antibodies.
LOINC 6-Axis Classification
Component
Percent heparin inhibition
Property
Ratio
Time Aspect
Pt
System
Ser
Scale Type
Qn
Method Type
N/A
Details
Class
SERO
Order/Observation
Observation
Short Name
Prcnt hep inhibited Ser-Rto
Display Name
Percent heparin inhibition (S) [Ratio]
Related Names
Frequently Asked Questions
What is LOINC code 73817-9?
LOINC code 73817-9 identifies "Percent heparin inhibition [Ratio] in Serum". The percent inhibition by heparin is determined by adding excess heparin (high-dose heparin) to the patient's serum. Testing is performed to increase the specificity of the assay and confirm a positive heparin induced antibody result. Inhibition of a positive result by 50% or more reduction in the optical density is considered confirmatory and characteristic of Type II heparin induced thrombocytopenia (HIT) antibodies.
What does 73817-9 measure?
This code measures Percent heparin inhibition in Ser. It belongs to the SERO class in the LOINC classification.
What is LOINC?
LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.