71772-8
LaboratoryMitogen stimulated gamma interferon [Units/volume] in Blood
Definition
In the Quantiferon Gold test, the Mitogen-stimulated plasma sample serves as an IFN-gamma positive control for each specimen tested. A low response to Mitogen (<0.5 IU/mL) indicates an Indeterminate result when a blood sample also has a negative response to the TB antigens. This pattern may occur with insufficient lymphocytes, reduced lymphocyte activity due to prolonged specimen transport or improper specimen handling, including filling/mixing of blood tubes, or inability of the patient's lymphocytes to generate IFN-gamma.
LOINC 6-Axis Classification
Component
Mitogen stimulated gamma interferon
Property
ACnc
Time Aspect
Pt
System
Bld
Scale Type
Qn
Method Type
N/A
Details
Class
MICRO
Order/Observation
Observation
Short Name
Mitogen IGNF Bld-aCnc
Display Name
Mitogen stimulated gamma interferon Qn (Bld)
Related Names
Frequently Asked Questions
What is LOINC code 71772-8?
LOINC code 71772-8 identifies "Mitogen stimulated gamma interferon [Units/volume] in Blood". In the Quantiferon Gold test, the Mitogen-stimulated plasma sample serves as an IFN-gamma positive control for each specimen tested. A low response to Mitogen (<0.5 IU/mL) indicates an Indeterminate result when a blood sample also has a negative response to the TB antigens. This pattern may occur with insufficient lymphocytes, reduced lymphocyte activity due to prolonged specimen transport or improper specimen handling, including filling/mixing of blood tubes, or inability of the patient's lymphocytes to generate IFN-gamma.
What does 71772-8 measure?
This code measures Mitogen stimulated gamma interferon in Bld. It belongs to the MICRO 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.