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Pathology and Laboratory Medicine
Test Catalogue

​Blood Parasites (Microscopic Review)


Specimen Requirements​ ​

  • ​Blood (4 thick and 4 thin blood films)
​Collection Procedure
  • Thick and thin unstained blood films need to be made at collection site within 30 minutes of collection according to specific guidelines for microscopic review
  • RUH, SPH, or SCH for collection preferably
  • Referred-in specimens (not collected within Saskatoon) sent to St. Paul’s Hospital first
​Required Volume
  • ​Optimal Volume: 4 mL
  • Minimum Volume: 1 ml
    (Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory/reflex testing. In some situations, a minimum volume may require a second collection.)
  • Pediatric/Capillary Volume: 0.5 mL

  • ​Thick and thin blood films should be stained and reviewed within 24 hours
  • Thick and thin blood films made greater than 4 hour after collection are reviewed but reported with a disclaimer comment
  • Thick and thin blood films are kept for one year
Grounds for Rejection​

Testing Information​ ​

  • ​24 hours a day and 7 days a week
Testing Site​
  • ​RUH Hematology
Results Reporting​
  • ​Results available within 24 to 72 hour of receipt in the RUH lab following review by the Hematopathologist on service
  • If a positive parasite is suspected, the Hematopathologist is contacted immediately 
  • All positive blood parasites results are reported immediately to the physician, Public Health Services and Infectious Disease Control.
  • ​ Wrights and Giemsa (Azure B type) stain diluted with phosphate buffer (pH 7.2)
​Specimen Retention
  • ​One month
Alternate Test Names​
  • ​Thick and thin blood films
  • Babesia
  • Trypanosomes
  • Microfilaria
  • Malaria
SHR LIS Test Code​
  • ​BLPAR (for Laboratory Use Only)

Patient History​ ​

​Relevant Clinical History
  • ​Country visited
  • Date of return to Canada


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Laboratory Controlled Document LSM-13 v3

Last Modified: Friday, December 1, 2017 |
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