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GIARDIA/CRYPTOSPORIDIUM DETECTION

Mnemonic

O P SCR

Synonym

O&P Screen - Ova and Parasite Screen - Giardia Antigen by EIA - Cryptosporidium Antigen by EIA - Cryptosporidium Detection

Includes

Direct antigen tests for Giardia lamblia and Cryptosporidium spp

Guidelines

This test is a screen for Giardia and Cryptosporidium antigens only. It should be used for patients with diarrhea and exposure to potential waterborne outbreaks, nursery schools, day care centers or camping/backpacking. For a more comprehensive panel, see Gastrointestinal Panel By PCR
For patients with relevant travel history, or immunocompromised patients, refer to the Parasite Exam Comprehensive, which includes this test as well as the microscopic exam for other parasites.

Specimen Collection Requirements

Collect

Stool, preserve in 10% formalin, Cary-Blair, SAF, or MIF within one hour of collection.

Patient Instructions for Collecting a Stool Sample

Supply Item Number - 204892

Handling

Collection kits available from Legacy. For specimen collection and transport see Specimen Collection-Transport Guide for Stool Orders. Can submit up to 3 stools, one per 24 hour period. Specimens are not accepted after the third day of hospitalization without prior consultation.

Minimum Volume

10.0 mL

Transport

Stool preserved in 10% formalin, SAF, or MIF at 20-30°C or 2-8°C; In Cary-Blair at 2-8°C

Rejection Criteria

Fresh stool not preserved in 10% formalin, Cary-Blair, SAF, or MIF within one hour of collection

Stability

In formalin, MIF, or SAF stored Ambient, Refrigerated, or Frozen: Up to two months
In Cary-Blair stored Refrigerated: Up to two weeks; Frozen: Up to two months

Testing Information

Performed

Mon - Fri

Reported

24-72 hours

Method

Enzyme immunoassay (EIA)

Reference Values

Reference Values

Negative for Giardia and Cryptosporidium

CPT Codes

87329 Giardia, 87328 Cryptosporidium

Last Updated: Thursday, January 5, 2017 03:41:11 AM


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