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HelpTest Code CBC Complete Blood Count (CBC), Blood
Specimen Requirements
Draw blood in a lavender top (EDTA) tube, and send 3 mL of EDTA whole blood refrigerated.
Note: Specimen may be stored refrigerated up to 48 hours. However, storage >24 hours may result in falsely elevated hematocrit results.
Specimen Stability
| ROOM TEMP | REFRIG 2-8 DEGREES |
| 24 HOURS | 48 HOURS |
Performing Laboratory
Conway Regional Laboratory Services
Reference Values
WBC
Adults: 4.1-11.3 x 1,000/µL
RBC
0-7 days: 3.9-6.4 x 1,000,000/µL
≥7-14 days: 3.6-6.2 x 1,000,000/µL
≥15-31 days: 3.0-5.4 x 1,000,000/µL
≥1-3 months: 2.7-4.9 x 1,000,000/µL
≥4-6 months: 3.1-4.5 x 1,000,000/µL
≥7 months-2 years: 3.7-5.3 x 1,000,000/µL
≥2-12 years: 4.0-5.2 x 1,000,000/µL
≥12-18 years: 4.6-6.2 x 1,000,000/µL
≥18 years: 4.11-5.78 x 1,000,000/µL
Females
0-7 days: 3.9-6.4 x 1,000,000/µL
≥7-14 days: 3.6-6.2 x 1,000,000/µL
≥15-31 days: 3.0-5.4 x 1,000,000/µL
≥1-3 months: 2.7-4.9 x 1,000,000/µL
≥4-6 months: 3.1-4.5 x 1,000,000/µL
≥7 months-2 years: 3.7-5.3 x 1,000,000/µL
≥2-12 years: 4.0-5.2 x 1,000,000/µL
≥12-18 years: 3.4-4.8 x 1,000,000/µL
≥18 years: 3.78-5.33 x 1,000,000/µL
HEMOGLOBIN
Males
0-7 days: 13.5-21.5 g/dL
≥7-14 days: 12.5-20.5 g/dL
≥15-61 days: 10.8-18.0 g/dL
≥3-6 months: 9.0-14.0 g/dL
≥7 months-2 years: 10.5-13.5 g/dL
≥3-6 years: 11.5-13.5 g/dL
≥7-12 years: 11.5-15.5 g/dL
≥13-17 years: 13.0-16.0 g/dL
≥17-18 years: 13.0-18.0 g/dL
≥18 years: 12.3-17.3 g/dL
Females
0-7 days: 13.5-21.5 g/dL
≥7-14 days: 12.5-20.5 g/dL
≥15-61 days: 10.8-18.0 g/dL
≥3-6 months: 9.0-14.0 g/dL
≥7 months-2 years: 10.5-13.5 g/dL
≥3-6 years: 11.5-13.5 g/dL
≥7-12 years: 11.5-15.5 g/dL
≥13-17 years: 12.0-16.0 g/dL
≥17-18 years: 11.5-16.0 g/dL
≥18 years: 11.5-16.0 g/dL
HEMATOCRIT
Males
0-7 days: 42.0-63.0%
≥7-14 days: 39.0-63.0%
≥15-31 days: 31.0-55.0%
≥1-2 months: 28.0-42.0%
≥3 months-2 years: 33.0-39.0%
≥3-6 years: 34.0-40.0%
≥7-12 years: 35.0-45.0%
≥13-17 years: 37.0-49.0%
≥17-18 years: 40.0-54.0%
≥18 years: 37.0-52.0%
Females
0-7 days: 42.0-63.0%
≥7-14 days: 39.0-63.0%
≥15-31 days: 31.0-55.0%
≥1-2 months: 28.0-42.0%
≥3 months-2 years: 33.0-39.0%
≥3-6 years: 34.0-40.0%
≥7-12 years: 35.0-45.0%
≥13-17 years: 36.0-46.0%
≥17-18 years: 35.0-47.0%
≥18 years: 34.0-46.0%
MCV
0-1 month: 85-115 fl
≥1-6 months: 75-102 fl
≥7 months-6 years: 75-88 fl
≥7-16 years: 78-98 fl
≥16 years: 80-96 fl
>18 years: 80-100 fl
MCH
27.5-33.2 pg
MCHC
33.0-36.5%
RDW
11.5-15.5%
PLATELETS
140-400 x 1,000/µL
Methodology
Flow Cell/Photometry/Impedance
Includes WBC, RBC, hemoglobin, hematocrit, MCV, MCH, MCHC, RDW, and platelet count.
Day(s) Test Set Up
Monday through Sunday
Available STAT
Test Classification and CPT Coding
85027