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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Scan for RBC Fragments


CPT Code(s): 85008

Test Description: Included In: WBC and Differential, CBC with Differential

Methodology: Manual Microscopy

Clinical Significance: To document the presence of RBC fragments when a complete differential is not needed.

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: 1 hour.
Routine: 4 hours.

Specimen Requirements

Specimen: Blood

Collection Container: Preferred: K3EDTA-Lavender top
Also Acceptable: K2EDTA-Lavender top, Pink top tube

Collection Volume: Preferred: 4 mL
Pediatrics: 1 mL

Sample Analyzed: Whole Blood

Volume Required: Preferred: 1 mL
Pediatrics: 0.25 mL in microtainer

Specimen Transport: Transport specimen to UWHC Core Laboratory (B4/220). Transport specimen at ambient temperature.

Unacceptable Criteria: Clotted specimens are not acceptable. Tubes with <25% of fill volume.

Stability: Ambient: 8 hours
Refrigerated: Not acceptable
Frozen: Not acceptable


Interpretive Guidelines:

A Wright-stained peripheral smear will be reviewed. Fragments will be reported as none seen, < 1, 1-5, 6-10, or > 10 per 100x oil field.

RBC Fragments, Schistocytes, Schistocyte

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