This term represents typical reducing substance assays that detect reducing substances in stool without (or before) the addition of HCl. These assays do not detect sugars that are not reducing, such as sucrose. A different code [LOINC: 57796-5] represents the stool reducing substance assay with the addition of HCl, which hydrolyzes sugars that are not typically reducing and converts them into a reducing form.
status
ACTIVE
Fully-Specified Name
component
Reducing substances
property
PrThr = Present or threshold: The Property PrThr stands for “Presence or Threshold”, meaning either a) the actual presence or absence of an analyte, or b) that the amount of analyte detected is over some predetermined threshold.
time
Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
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.
3893 of 2000 most commonly performed tests by labs in USA
first released
last updated
2.73
last change type
MIN - change to field other than name
change reason
The PrThr property is used for LOINC terms whose results are reported using an ordered categorical scale, regardless of whether or not an internal threshold was used to make that determination. This change was approved by the Laboratory LOINC Committee in June 2016.
Related Names
Bowel movement Chemistry Faecal Faeces Fecal Feces Ordinal Point in time PR QL
Qual Qualitative Random Reduc Reduc subs Reducing substance Screen Stl Stool = Fecal UniversalLabOrders
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