Detection and identification of parasitic protozoa and the eggs and larvae of parasitic helminths
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 |
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
Microscopic
May include Touch/Tease Preparation, Direct Wet Preparation, Concentrated Wet Preparation, Permanent (Trichrome or Giemsa) Stained Preparation.
Amoeba, Ameba
Egg Cyst
Helminth Echinococcus
O and P (Ova and Parasites)
Ova
Parasites
Parasitic Exam
Protozoa
Trichrome Stain
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
Varies
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.
Specify on the order if a specific parasite is suspected.
Indicate source on the label of the specimen.
Question ID | Description | Answers |
---|---|---|
Q00M0045 | Specimen Source |
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.
If not ordering electronically, complete, print, and send a Gastroenterology and Hepatology Client Test Request (T728) with the specimen.
Respiratory specimens, spinal fluid, abscess, or drainage material: 0.5 mL
Tissue: 3 mm
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Varies | Refrigerated | 5 days |
Detection and identification of parasitic protozoa and the eggs and larvae of parasitic helminths
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
A variety of different parasites may be found in specimens other than stool (eg, respiratory specimens, liver cyst aspirates or abscesses, and tissues). These parasites may include protozoa (microscopic unicellular eukaryotes) and helminths (worms). Infection is often asymptomatic but possible signs and symptoms of infection include cough, fever, bloody sputum, skin lesions, and abdominal pain.
Negative
If positive, organism identified
A positive result indicates the presence of the parasite but does not necessarily indicate that it is the cause of the patient's symptoms. Some strains of protozoa are nonpathogenic and some helminths cause little or no illness.
This test is not appropriate for the detection of microfilariae, malaria, trypanosomes, or Trichomonas vaginalis.
1. Garcia L: Diagnostic Medical Parasitology. 6th ed.ASM Press; 2016
2. Pritt BS: Parasitology Benchtop Reference Guide. 2nd ed. CAP; 2017
Different specimen sources may potentially harbor different types of parasites. A portion of the submitted specimen, depending on the type of specimen and what organism may be specifically suspected, may be examined by direct wet prep slide, tease or touch prep slides, concentrated for wet prep exam, or stained by trichrome stain, Ecostain, or Giemsa stain.(Unpublished Mayo method)
Monday through Friday
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 US Food and Drug Administration.
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)
Test Id | Test Order Name | Order LOINC Value |
---|---|---|
OAPNS | Ova and Parasite, Microscopy, Varies | 673-4 |
Result Id | Test Result Name |
Result LOINC Value
Applies only to results expressed in units of measure originally reported by the performing laboratory. These values do not apply to results that are converted to other units of measure.
|
---|---|---|
OAPNS | Ova and Parasite, Microscopy, Varies | 673-4 |