Lab Test : Ova and Parasite Exam, Stool

Print this page Bookmark and Share
Alternate:O & P
Includes:Standard formalin-ethyl acetate concentration and trichrome stain
Phone:(937) 641-3902
SQ Code:OP
Available:Daily, first shift only
Turnaround:3 days
Specimen:Stool or stool in Ova and parasite Total-Fix (O & P) collection kit. Ova and parasite transport media preferred.

Volume:5.0 mL stool.
Container:Total-Fix vial (O&P collection kit) or clean container.
Total-Fix O&P collection kit available from the laboratory.
Temperature:Total-Fix O&P transport media - Preferred
Room temperature - 14 day(s)
Refrigerated - 14 day(s)

Sterile container Alternate N/A 5gm or 5mL
Room temperature - 8 hour(s)
Refrigerated - 24 hours

Rejection:Specimen submitted on tissue paper, contaminated with urine and/or water, containing interfering substances, e.g. castor oil, bismuth, metamucil, or barium.
Stool on culturette swab.
Stool received in Cary-Blair medium.
Unpreserved stool received outside of specified time frame.
Stool frozen.
Normal:No parasites seen.
Uses:Identify microorganisms that may cause parasitic infection.
Limitations:One negative result does not rule out the possibility of parasite infestation. Multiple specimens for Ova and Parasite exam should be collected at least 24 hours apart. Generally, no more than 3 specimens are required to identify parasitic infections. Fresh specimens are required for amoebae and trophozoites must be schedule with the Microbiology Lab (641-3902).
Cryptosporidium not detected by O&P exam.
Method:Microscopic stained

Sign up for Pediatric Link

Finding the latest trusted child health and safety information doesn't have to be hard. Pediatric Link, Dayton Children's e-newsletter offers timely and up-to-date information for health care professionals from the experts you trust at Dayton Children's.  Sign up

Upcoming Events

Free bike helmets will be given out as part of the Monroe Bike Rodeo this year.

West Carrollton Police will be on hand to insure proper fit for all bike helmets.

Sample the distinctive flavors of the many cultures of Old North Dayton while enjoying entertainment, children's activities and a bicycle decoration competition for ages 9-16. All bike entries MUST be registered with the Dayton Police in advance at or at the Festival at 5:30 PM.

View full event calendarView full event calendar

The Right Experts

Just right for all kids


The Children's Medical Center of Dayton Dayton Children's
The Right Care for the Right Reasons

One Children's Plaza - Dayton, Ohio - 45404-1815