Lymphocyte proliferation.Interleukin 2.maximum/CD3 in Blood by Flow cytometry (FC)   81757-7

LOINC Code


LOINC code81757-7
nameLymphocyte proliferation.Interleukin 2.maximum/CD3 in Blood by Flow cytometry (FC)
descriptionThe percent of proliferating lymphocytes stimulated by exogenous interleukin-2 (IL-2) out of the total CD3+ T-cells. The maximum (highest proliferating out of 3 titrations) response to IL-2 is reported. This is a second-level test for assessing lymphocyte (T-cell) function after lymphocyte proliferation to phytohemagglutinin has been assessed. The test is used to evaluate patients with impairment in cellular immunity due to primary or secondary immunodeficiencies and in patients receiving immunosuppressive or immunomodulatory therapy.
statusACTIVE

Fully-Specified Name

componentLymphocyte proliferation.Interleukin 2.maximum/CD3
propertyNFr  =  Number Fraction
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemBld  =  Whole blood
scaleQn  =  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
methodFlow cytometry

Additional Names

short nameLPT IL-2 max/CD3 NFr Bld FC

Basic Attributes

classHEM/BC
type1  Laboratory
order vs. observationObservation
example UCUM units%
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)
example unit%

Associated Observations

LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations.

History/Usage

first released
last updated2.56
last change typeMIN  - change to field other than name

Related Names

Blood
Costimulator
Dynamic
FC
HEMATOLOGY/CELL COUNTS
II
IL
IL2
IL-2
Leu4
Leu-4
LPA
LPT
LPT IL-2 max
LST
Lymphocyte antigen proliferation
Lymphocyte antigen stimulation
Lymphocyte Mitogenic Factor
Number fraction
Percent
PHA
Point in time
QNT
Quan
Quant
Quantitative
Random
T3
T-Cell Growth Factor
T-Cell Stimulating Factor
TCGF
Thymocyte Stimulating Factor
WB
Whole blood

Copyright © 2024 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2024, 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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