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Test Code LAB907 Cryptosporidium Antigen

Performing Lab

Arnot Ogden Medical Center

Ordering Recommendations

Sensitive screening for the detection of Cryptosporidum antigens present in stool specimens.

Collect

Stool

Collection Device

Preferred Specimen: Preserved stool in SAF formalin  (orange top container)

Other acceptable containers:
Plain Sterile Container (must be tested within 30 minutes of collection)
10% formalin
Cary-Blair medium
C&S medium
Stuarts medium

Stability (from collection to initiation)

Specimen Type Container Storage Temperature Length of Stability
Unpreserved stool plain sterile 2-8C 30 minutes
Preserved stool SAF/10% formalin room temperature
refrigerated
frozen		 2 months
Preserved stool C&S/Cary-Blair refrigerated
frozen (-20C)		 2 weeks
2 months

Storage/Transport Temperature

Collection Container Acceptable Storage/Transport Conditions
SAF/10% formalin refrigerated (2-8C)
room temperature (20-30C)
frozen (-20 - -70C)
C&S/Cary-Blair refrigerated (2-8C)
frozen )-20 - -70C)

Methodology

Solid-phase immunochromatographic lateral flow assay

Start Date

9/13/2017

Last Review Date

8/7/2025

Performed

Monday - Friday

Reference Interval

Negative

Unacceptable Conditions

  • Unpreserved specimens that are >30 minutes old
  • Preserved specimens that exceed stability limits
  • Specimens that do not meet laboratory labeling requirements
  • Specimens collected with expired devices
  • Specimens collected in PVA transport
  • Specimens collected during an endoscopic procedure are not accepted.

Lab Section

Microbiology

Collection Instructions

Patient should pass stool into a clean dry pan or special container (such as a hat) mounted on the toilet  for this purpose.  Care should be taken to not contaminate with urine. 

Transfer representative portion of sample to the SAF container to the red fill line on the side of the vial. 

Remarks

  • Endoscopic and gastric aspirates are not approved specimen types for this test.
  • This test will only detect Cryptosporidum antigens in fecal specimens. This test will not detect any other parasitic agent of infection.
  • If a single specimen is submitted for examination and results are negative, be advised that one negative specimen does not rule out the possibility of infection.
  • When clinically indicated, results should be confirmed by a second method.

Reported

Monday - Friday

Notes

  • Endoscopic and gastric aspirates are not approved specimen types for this Cryptosporidium Antigen test.
  • This test will only detect Cryptosporidum antigen in fecal specimens. This test will not detect any other parasitic agent of infection.
  • If a single specimen is submitted for examination and results are negative, be advised that one negative specimen does not rule out the possibility of infection.
  • When clinically indicated, results should be confirmed by a second method.