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GENERAL INFORMATION

 

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Mayo Clinic Laboratories

Drug Testing Mayo Clinic Laboratories

 

Mayo Clinic Laboratories

Test Code RBC Red Blood Cell (RBC) Count, Blood

Performing Laboratory

St. Lukes Hospital Laboratory

Methodology

Automated Flow-Through Cytometry

Specimen Requirements

Draw blood in a lavender-top (EDTA) tube(s), and send 1 mL of EDTA whole blood. If there is a delay in transport of >8 hours, make 4 to 5 blood smears within 2 hours of draw. Forward promptly at ambient temperature.
Note:  1. If specimen will not arrive at St. Luke’s Hospital Laboratory the same day as drawn, refrigerate specimen. Transport at ambient temperature. Do not place EDTA whole blood directly on top of an ice pack.

2. Label slides with patient’s full name (first and last) and date and time of collection.

Reference Values

Males

0-14 days:  4.14-6.10 M/µL

14 days-4 years:  4.00-5.60 M/µL

4-12 years:  4.00-5.40 M/µL

>12 years:  4.50-5.90 M/µL

Females

0-14 days:  4.14-6.10 M/µL

14 days-4 years:  4.00-5.60 M/µL

4-12 years:  4.00-5.40 M/µL

>12 years:  3.80-5.20 M/µL

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

85041