Limitations

Detected Cryptosporidium only

The detection of microbial DNA or RNA is dependent upon proper sample collection, handling, transportation, storage, and preparation. There is a risk of false-negative results due to the presence of strains with sequence variability or genetic rearrangements in the target regions of the assays.

This test is not recommended as a test of cure.

Repeat testing should not be performed on samples collected less than 7 days apart.

The presence of blood or mucous in the sample may interfere with testing. Sample should be rejected.

The following information is provided by the test manufacturer:
Cary Blair media, used for dilution and processing of clinical stools, is screened by manufacturers for viable organisms but may not be specifically tested for microbial nucleic acids.  The presence of nucleic acids at levels that can be detected by the FilmArray GI Panel may lead to false positive test results.  (BioFire Technical Notes FLM1-PRT-0239-01 and QS-339B-01.)
 

Cryptosporidium molecular assay information:
Cryptosporidium species: Detects but does not differentiate approximately 23 different Cryptosporidium species, including the most common species (eg, C hominis and C parvum), as well as less common species (eg, C meleagridis, C felis, C canis, C cuniculus,  C muris, and C suis), but is not expected to detect the very rare species C bovis, C ryanae, and C xiaoi.

Information listed above concerning intestinal pathogens taken from: https://www.fda.gov/food/foodborne-pathogens/bad-bug-book-second-edition

(FilmArray Gastrointestinal [GI] Panel CE IVD, BioFire Diagnostics, LLC, Salt Lake City, Utah)