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SMEAR, BLOOD PARASITE

Mnemonic

SM BL PARA

Synonym

Malaria smear - Giemsa stain - Borrelia smear - Filaria smear

Includes

Malaria EIA test if applicable

Guidelines

This is a time sensitive specimen and must be received within 24 hours of collection. This order can be used for looking for Malaria, Borrelia (Relapsing Fever), Filaria, and other blood parasites such as Trypanosomes and Babesia. Please note on request if a specific parasite is suspected and any pertinent travel history.

Specimen Collection Requirements

Collect

Whole Blood, one 5.0 mL lavender (EDTA) top tube

Handling

Make 1-2 thin and 1-2 thick smears (unstained and unfixed) immediately after drawing blood. Thick smears are made by dropping 10.0-20.0 µL of blood onto a slide and spreading it into a dime sized area with a wooden or plastic applicator. Send smears and blood tube to the lab.

Minimum Volume

2.0 mL Whole Blood

Transport

Blood and smears (in slide holders) at 20-25°C

Rejection Criteria

Must be received within 24 hours of collection. This is a time sensitive specimen.

Stability

Ambient: 24 hours; Refrigerated: Unacceptable; Frozen: Unacceptable

Testing Information

Performed

7 days/week

Reported

Screen: 1 hour, Definitive answer and speciation if positive: 24 hours

Method

Stain

Reference Values

Reference Values

Negative

Critical Values

Positive blood parasite smears are considered a critical value.

Comments

Infection with a blood parasite cannot be ruled out by a single blood sample.  A determination of the parasitemia (number of parasites per 100 RBC’s) will be made and reported on all positive smears.

CPT Codes

87207, 87015

Last Updated: Thursday, January 5, 2017 03:41:37 AM


Client Services: 503-413-1234