29891-9
LaboratoryHelicobacter pylori [Presence] in Stomach by urea breath test
Definition
The patient ingests C-14 or C-13 labeled urea , the clinic collects the patients exhaled breath and the lab measures the amount of the chosen isotope in the exhaled CO2. H pylori produces urease that digests urea to produce CO2. The most common isotope is C13 which is detected by infrared spectroscopy. Tagged CO2 in the breath is evidence of gastric Helicobacter pylori infection.
LOINC 6-Axis Classification
Component
Carbon dioxide^post dose urea
Property
PrThr
Time Aspect
Pt
System
Exhl gas
Scale Type
Ord
Method Type
N/A
Details
Class
MICRO
Order/Observation
Both
Short Name
Urea Breath Test Ql
Display Name
CO2 post dose urea Ql (Exhl gas)
Related Names
Frequently Asked Questions
What is LOINC code 29891-9?
LOINC code 29891-9 identifies "Helicobacter pylori [Presence] in Stomach by urea breath test". The patient ingests C-14 or C-13 labeled urea , the clinic collects the patients exhaled breath and the lab measures the amount of the chosen isotope in the exhaled CO2. H pylori produces urease that digests urea to produce CO2. The most common isotope is C13 which is detected by infrared spectroscopy. Tagged CO2 in the breath is evidence of gastric Helicobacter pylori infection.
What does 29891-9 measure?
This code measures Carbon dioxide^post dose urea in Exhl gas. 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.