UNFORMED (soft or liquid) stool/feces specimens collected in a sterile, leak-proof container.
Stool should ONLY be submitted for patients >12 months old.
Send to the lab immediately at room temperature. If transport is delayed, refrigerate or freeze specimen and send on ice.
1 hour at room temperature; 1 to 24 hours refrigerated; if more than 24 hours, specimen must be frozen.
Formed stool, specimens sent on swabs, and diapers containing stool are not acceptable specimens for this test. Stool submitted on children <12 months old will NOT be accepted. Washings (colonic, duodenal, etc) will not be accepted due to their possible dilution factor. Specimens containing barium should not be submitted.
2 hour expected turn-around time from receipt in lab
If the GDH antigen screen is found indeterminate, testing will reflex to Illumigene® testing for confirmation of specimen.
87324 (GDH antigen screen); 87493 (Illumigene®)
GDH antigen screen: membrane enzyme immunoassay; Confirmatory testing: loop-mediated isothermal DNA amplification (LAMP)