For 3 days before stool collection
***Finish antifungal or Antibiotic medication and wait 3 days before beginning collection
For 2 days before stool collection
***Stop taking digestive enzymes, antacids, and aspirin, unless otherwise instructed by your healthcare provider.
In My Opinion (IMO), but not listed in the MetaMetrix instructions:
>>>>Stop taking probiotics for 14 days prior to collecting your stool so the test finds only those being sloughed off from your gut wall.
What You Need to Know About Probiotics http://www.yeastinfectionadvisor.com/probioticsforyeast.html
>>>>Stop ingesting dietary sources of yeast/fungi for 3-4 days
>>>>Stop ingesting dietary source of parasites for 3-4 days