Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.
The following algorithms are available in Special Instructions:
-Parasitic Investigation of Stool Specimens Algorithm
-Laboratory Testing for Infectious Causes of Diarrhea
Specimen Type Describes the specimen type needed for testing
Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.
Microbiology Test Request Form (T244) (http://www.mayomedicallaboratories.com/it-mmfiles/microbiology_test_request_form.pdf)
General Test Request Form (T239) (http://www.mayomedicallaboratories.com/it-mmfiles/general-request-form.pdf)
Specimen Type: Stool, duodenal aspirate, colonic washing, liver fluid/abscess
Container/Tube: ECOFIX preservative (Supply T219)
Specimen Volume: Portion of stool; or entire collection of intestinal specimen or liver fluid/abscess
1. Place specimen into preservative within 30 minutes of passage or collection.
2. Follow instructions on the container as follows:
a. Mix the contents of the tube with the spoon, twist the cap tightly closed, and shake vigorously until the contents are well mixed. Refer to the fill line on the Ecofix vial for stool specimens.
b. Do not fill above the line indicated on the container.
Specimen Type: Respiratory specimens or tissue
Sources: Bronchial washing, sputum, bronchoalveolar lavage
Container/Tube: Sterile container
Specimen Volume: Entire collection
1. Place specimen into container and send refrigerate.
2. Specify on the order if a specific parasite is suspected.
1. It is strongly recommended that multiple stool specimens be submitted for ova and parasite analysis. At least 3 specimens should be collected, 1 each day or on alternate days (over a maximum 10-day period). Parasites are shed irregularly in stool and examination of a single specimen does not guarantee detection.
2. To submit worms or worm segments, place in 70% alcohol and order PARID / Parasite Identification instead of the OAP / Parasitic Examination.
a. If Cryptosporidium is suspected, order CRYPS / Cryptosporidium Antigen, Feces instead.
b. If Giardia is suspected, order GIAR / Giardia Antigen, Feces instead.
c. If Cyclospora is suspected, order CYCL / Cyclospora Stain instead.
d. If microsporidia are suspected, order MTBS / Microsporidia Stain instead.
e. If pinworm is suspected, order PINW / Pinworm Exam, Perianal instead. Perianal skin sampling using clear cellophane tape or a SWUBE device is required for this test.
3. If the sources is something other than listed in Specimen Required:
a. Urine-send for SHUR / Schistosoma Exam, Urine or TVRNA / Trichomonas vaginalis by Nucleic Acid Amplification as applicable
b. Skin scrapings-send for PARID / Parasite Identification if scabies is suspected
c. Corneal scrapings/biopsy, CSF, or brain tissue for free-living amebae (Acanthamoeba or Naegleria)-send for ACANT / Acanthamoeba/Naegleria species, Corneal Scraping or Spinal Fluid
Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.
|Fecal||Ambient (preferred)||21 days|