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To view specimen requirements and codes please select your laboratory:
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Ova and Parasite Concentrate Result, Trichrome Result
Interfering substances - bismuth, barium (wait 7-10 days), antimicrobial agents (wait 2 weeks), gallbladder dye (wait 3 weeks after procedure)
Fresh stool preserved in formalin and PVA. Place fresh stool in 10% formalin transport vial, as well as a PVA transport medium, within 1 hour of collection. Add stool to bring the liquid level to the "fill to here" line on the vial. Mix well.
See Stool Samples for Ova and Parasites (O & P) in the Parasites section of Specimen Collection and Handling.
Stool: Add stool to bring the liquid level to the "fill to here" line on the vial.
Stool in Sodium Acetate-Acetic Acid Formalin (SAF) transport vial
10% formalin and polyvinyl alcohol (PVA) transport vials
Unpreserved stool • Specimens containing barium • Stool preserved in medium other than 10% formalin, PVA, Sodium Acetate Formalin (SAF) or Merthiolate Iodine Formalin (MIF) • Specimen received frozen • Stool submitted in expired transport vial
Microscopic Examination of Concentrate and Permanent Stained Smear
Diseases caused by human parasites remain on a worldwide basis among the principle causes of morbidity and mortality. Correct diagnosis of intestinal parasitic infection depends on proper collection, transport, detection and identification of parasites in stool specimens. Symptoms range from malaise to death. Treatment is dependent upon examining multiple stool exams due to the erratic shed rates of some parasites.
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
(The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.)
* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.