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Test ID: HPSA    
Helicobacter pylori Antigen, Feces

Method Description Describes how the test is performed and provides a method-specific reference

The HpSA is a microwell-based enzyme-linked immunosorbent assay (ELISA) that detects Helicobacter pylori antigens present in human stool. It uses polyclonal anti-Helicobacter pylori capture antibody adsorbed to microwells. Diluted specimens from the patient and a peroxidase-conjugated polyclonal antibody are added to the wells and incubated for 1 hour at ambient temperature. A wash is performed and substrate is added; after 10 minutes of incubation, color develops in the presence of bound enzyme. The results can be read by observation or by use of a spectrophotometer. (Package insert: Premier Platinum HpSA PLUS, Meridian Diagnostics, Inc., Cincinnati, OH, February 2008)

Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.

Monday through Saturday; Varies

Analytic Time Defines the amount of time it takes the laboratory to setup and perform the test. This is defined in number of days. The shortest interval of time expressed is "same day/1 day," which means the results may be available the same day that the sample is received in the testing laboratory. One day means results are available 1 day after the sample is received in the laboratory.

Same day/1 day

Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result

3 days

Specimen Retention Time Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded

Fresh Frozen - discarded same day

Performing Laboratory Location The location of the laboratory that performs the test

Rochester