|Description||Helicobacter pylori antigen is detected in a stool sample by ELISA. This is a non-invasive test to which compares well with urea breath testing and is superior to Helicobacter pylori serology with regards to assessing the H. pylori status of a patient.
Turnaround times for 90% of HpSAg requests: 7 calendar days.|
|Additional Info|| Also refer to the "Dyspepsia" NICE guideline for more information.|
|Interpretation|| Antimicrobials, proton pump inhibitors and bismuth preparations are known to suppress H. pylori and ingestion of these prior to testing may give a false negative result.
If a negative result is obtained for a patient ingesting these compounds within two weeks prior to performing the test, it may be a false-negative result and the test should be repeated on a new specimen obtained two weeks after discontinuing treatment.
A positive result for a patient ingesting these compounds, within two weeks prior to performing the test should be considered accurate|
|Collection Conditions||Note: Please use the faecal culture collection tube for this test although the test itself is not based on culture.
|Min. Vol|| 2g|
|Ref. Range (Male)|| |
|Ref. Range (Female)|| |
|Ref. Range (Paed)|| |
|Ref. Range Notes||
|Units|| - Not Defined -|
|IP Acute TAT||5 days|
|IP Routine TAT||5 days|
|GP Acute TAT||5 days|
|GP Routine TAT||5 days|
|Turnround Comment||Negative results may be available considerably earlier than stated turnaround time.|
Originally edited by : Dr. H Schuster ext 25035. Review due on 28/02/2018 10:34:20. Published By K Roberts on 28/02/2017 10:34:20.