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Test Code RETLMW Reticulocyte Count LAB296

Test Method

Sysmex XN Systems:

  • Reticulocyte Count: Flow cytometry


Testing is performed Monday through Sunday.

Routine orders: Typically completed within 4 hours after the
specimen arrives at the testing site.

STAT orders: Typically completed within 30 minutes after
the specimen arrives at the testing site.

Useful For

Monitoring reticulocyte count

Screening tool to confirm a hematologic disorder.

Establish or rule out a diagnosis.

Detect an unsuspected hematologic disorder.

Monitor effects of radiation or chemotherapy.

Specimen Requirement

EDTA whole blood is required.

CPT Code Information

85045 Blood Counts: reticulocyte, automated

Reference Values

0-14 Days: 0.239-0.404 x 106/uL

14 Days-12 Years: 0.046-0.154 x 106/uL

≥ 12 Years: 0.059 – 0.146 x 106/uL

LOINC Code Information

60474-4 Reticulocytes [#/volume] in Blood By Automated Count

Additional Specimen Collection Information

Whole blood collected in EDTA purple-top tube. The
tube must be at least one quarter full to be acceptable for

Capillary specimen collected in EDTA microtube. The 
tube must contain at least 375 uL (bottom line) to be
acceptable for testing.