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Test Code OAPNS Ova and Parasite, Microscopy, Varies

Useful For

Detection and identification of parasitic protozoa and the eggs and larvae of parasitic helminths

Method Name

Microscopic

May include Touch/Tease Preparation, Direct Wet Preparation, Concentrated Wet Preparation, Permanent (Trichrome or Giemsa) Stained Preparation.

Reporting Name

Ova and Parasite, Microscopy, Varies

Specimen Type

Varies


Ordering Guidance


If specimens are suspected of containing tapeworm segments or other adult worms or worm segments, the suspected worm should be placed in 70% alcohol and order PARID / Parasite Identification, Varies.

 

If microsporidia are suspected:

-For non-stool/non-urine specimen, order MTBS / Microsporidia Stain, Varies

-For feces or urine, order LCMSP / Microsporidia species, Molecular Detection, PCR, Varies

 

If pinworm is suspected, order PINW / Pinworm Exam, Perianal. Perianal skin sampling using clear cellophane tape or a SWUBE device is required for this test.

 

Urine specimens should be sent for SHUR / Schistosoma Exam, Random, Urine or TVRNA / Trichomonas vaginalis, Nucleic Acid Amplification, Varies as applicable.

 

If scabies is suspected, submit skin scrapings and order PARID / Parasite Identification, Varies.

 

Duodenal aspirates, small bowel aspirates, or colonic washings should be placed in Ecofix in a ratio of 1:1 and order OAP / Ova and Parasite, Concentrate and Permanent Smear, Microscopy, Feces.

 

For preserved stool analysis, order OAP / Ova and Parasite, Concentrate and Permanent Smear, Microscopy, Feces.



Necessary Information


Specify on the order if a specific parasite is suspected.

 

Indicate source on the label of the specimen.



Specimen Required


Specimen Type: Bile

Container/Tube: Sterile container

Specimen Volume: Entire collection

 

Specimen Type: Bone marrow

Container/Tube: Lavender top (EDTA) and/or slides

Specimen Volume: 4 mL

Collection Instructions:

1. Bone marrow and/or slides will be accepted for this test.

2. If submitting slides with EDTA tube, label and bag specimens together. Send refrigerate as one collection.

 

Specimen Type: Spinal fluid

Container/Tube: Sterile container

Specimen Volume: 1 mL

 

Specimen Type: Fluid, abscess, drainage material

Sources: Abdominal, ascites, brain, cyst, (also specify location of cyst) liver, lymphatic, peritoneal, splenic

Container/Tube: Sterile container

Specimen Volume: 15 mL

Collection Instructions:

1. Place half of collection into preservative (Ecofix or PVA and Formalin) in a ratio of 1:1.

2. Place other half of collection in a sterile container.

3. Label both specimens, bag together, and send refrigerate as one collection.

 

Specimen Type: Respiratory

Source: Bronchial washing, bronchoalveolar lavage, sputum

Container/Tube: Sterile container

Specimen Volume: Entire collection

 

Specimen Type: Tissue

Sources: Bladder, brain, colon, intestine, liver, lymph node, lung, muscle, rectal, spleen

Container/Tube: Sterile container

Specimen Volume: 5-10 mm

Collection Instructions: Place specimen in 1 to 2 drops of sterile saline to keep tissue moist.


Specimen Minimum Volume

Respiratory specimens, spinal fluid, abscess, or drainage material: 0.5 mL
Tissue: 3 mm

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Refrigerated 5 days

Reference Values

Negative

If positive, organism identified

Day(s) Performed

Monday through Friday

Report Available

4 to 5 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

87015-Concentration (any type), for infectious agents (if applicable)

87209-Smear, primary source with interpretation; complex special stain (eg, trichrome, iron hematoxylin) for ova and parasites (If applicable)

87210-Wet mount for infectious agents (if applicable)

87207-Smear, primary source, with interpretation; special stain for inclusion bodies or intracellular parasites (if applicable)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
OAPNS Ova and Parasite, Microscopy, Varies 673-4

 

Result ID Test Result Name Result LOINC Value
OAPNS Ova and Parasite, Microscopy, Varies 673-4

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
BCON Concentrate Exam No, (Bill Only) No
BDIR Direct Prep Exam No, (Bill Only) No
BTRI Stain Slide Exam No, (Bill Only) No
FILB Filaria Bill Only No, (Bill Only) No

Testing Algorithm

Reflex testing will be added and performed by the laboratory based on the following criteria:

-Specimen source

-Specimen type: Unpreserved, refrigerate versus preserved

-Indication of parasites suspected

Forms

If not ordering electronically, complete, print, and send a Gastroenterology and Hepatology Client Test Request (T728) with the specimen.