Red Blood Cell (RBC) Count CPT: 85041
Synonyms
Erythrocyte Count
Expected Turnaround Time
Within 1 day
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Specimen Requirements
Specimen
Whole blood
Volume
Tube fill capacity
Minimum Volume
0.5 mL (500 μL for pediatric microtainer capillary tubes; fill tube to capacity.)
Container
Lavender-top (EDTA) tube
Collection
Invert tube 8 to 10 times immediately after tube is filled at the time of collection.
Storage Instructions
Maintain specimen at room temperature.
Stability Requirements
Patient Information
To evaluate the number of red blood cells (RBCs); to screen for, help diagnose, or monitor conditions affecting red blood cells.
As part of a complete blood count (CBC), during a health checkup, or when a healthcare practitioner suspects that you have a condition such as anemia (decreased number of RBCs) or polycythemia (increased number of RBCs).
A blood sample drawn from a vein or by a fingerstick (children and adults) or heelstick (newborns).