Deprecated Serotonin release 0.1 U/mL heparin.porcine [Units/volume] in Serum   50730-1

LOINC Code


LOINC code50730-1
nameDeprecated Serotonin release 0.1 U/mL heparin.porcine [Units/volume] in Serum
descriptionResulted as percentage of specific serotonin release: (cpm test - cpm spont)/(cpm max - cpm spont) x 100, where cpm "spont" is the spontaneous release of [3H]serotonin from cells incubated in absence of antibodies, and cpm "max" is the maximum release of [3H]serotonin from cells lysed using 1% Triton X-100.
statusDEPRECATED
status reasonAmbiguous - Nearly all heparin used in serotonin release assays is porcine (made from pig intestines), including low molecular weight heparin (LMWH) and unfractionated heparin (UFH). Additionally, most labs today only use UFH since it is more likely to detect a positive result. Tests using low molecular weight heparins (e.g. Lovenox®) may cross-react with antibodies present in a patient's sample, resulting in weak or inconclusive results. Because it is important to identify the type of heparin used in the assay and porcine heparin is ambiguous in that it could represent either LMWH or UFH heparin, we are deprecating the porcine heparin terms.
Replacements

alternatives to this code:

50728-5Serotonin release 0.1 IU/mL heparin.unfractionated [Units/volume] in Serum

Fully-Specified Name

componentSerotonin release 0.1 U/mL heparin.porcine
propertyACnc  =  Arbitrary Concentration
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.
systemSer  =  Serum
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
method

Additional Names

short nameDeprecated SRA 0.1U/mL porcine heparin S

Basic Attributes

classSERO
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 updated2.70
last change typeMIN  - change to field other than name

Related Names

5-HT
5-hydroxytryptamine
5-hydroxytryptophane
Arbitrary concentration
C10H12N2O
Enteramine
Hep
Hepar
Heparin dependent platelet antibody
Heparn
low dose
Point in time
Pork
QNT
Quan
Quant
Quantitative
Random
Serology
Serotonin release assay
Serum
SR
SRA
SRA 0.1U
SRA porcine low
Swine

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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