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Test Code CRYPS Cryptosporidium Antigen, Feces

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Reporting Name

Cryptosporidium Ag, F

Specimen Type

Fecal


Specimen Required


Submit only 1 of the following specimens:

 

Specimen Type: Preserved feces

Supplies:

-Formalin 10% Buffered Neutral 15 mL (T466)

-Stool Collection Kit, Random (T635)

Container/Tube:

Preferred: Stool container with 10% buffered formalin preservative

Acceptable: SAF (sodium acetate formalin)

Specimen Volume: 5 grams

Specimen Stability Information: Ambient (preferred) 60 days

 

Specimen Type: Unpreserved feces

Supplies:

-Stool container, Small (Random), 4 oz (T288)

-Stool Collection Kit, Random (T635)

Container/Tube: Stool container

Specimen Volume: 5 grams

Specimen Stability Information: Frozen 60 days


Reject Due To

Grossly bloody (containing no visible feces)
Very mucoid feces
Specimen preserved in ECOFIX (green cap), C and S (orange cap), or methiolate formalin (MF)
Duodenal aspirates
Small bowel aspirates		 Reject

Specimen Stability Information

Specimen Type Temperature Time Special Container
Fecal Varies

Specimen Minimum Volume

1 gram

Day(s) Performed

Monday through Friday

Specimen Retention Time

Fresh/Frozen: 1 week; Preserved specimens: 1 week

Report Available

1 to 3 days

Reference Values

Negative

Useful For

Establishing the diagnosis of intestinal cryptosporidiosis

Testing Algorithm

For other diagnostic tests that may be of value in evaluating patients with diarrhea; the following algorithms are available:

-Parasitic Investigation of Stool Specimens Algorithm

-Laboratory Testing for Infectious Causes of Diarrhea

CPT Code Information

87328

LOINC Code Information

Test ID Test Order Name Order LOINC Value
CRYPS Cryptosporidium Ag, F 6371-9

 

Result ID Test Result Name Result LOINC Value
24086 Cryptosporidium Ag, F 6371-9

Forms

If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:

-Gastroenterology and Hepatology Test Request (T728)

-Microbiology Test Request (T244)

Supportive Data

The sensitivity, specificity, positive predictive value and negative predictive value of the enzyme-linked immunosorbent assay were 98%, 98%, 98%, and 98.5%, respectively, as determined by examination of 130 fecal specimens by conventional microscopy and by enzyme-linked immunosorbent assay.