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HelpTest Code CBC Complete Blood Count (CBC), Blood
Performing Laboratory
MaineGeneral Medical Center
Reference Values
WBC
0-8 days: 6.0-25.0 10^3/cu mm
9 days-24 months: 5.0-14.0 10^3/cu mm
2-9 years: 4.8-10.8 10^3/cu mm
10-17 years: 4.8-10.8 10^3/cu mm
≥18 years: 4.8-10.8 10^3/cu mm
Critical values (automatic call-back): <1.0 10^3/cu mm or >30 10^3/cu mm
RBC
Males
0-8 days: 4.06-6.6 10^6/cu mm
9 days-24 months: 3.7-5.3 10^6/cu mm
2-9 years: 3.9-5.3 10^6/cu mm
10-17 years: 4.5-5.3 10^6/cu mm
≥18 years: 4.7-6.1 10^6/cu mm
Females
0-8 days: 4.06-6.6 10^6/cu mm
9 days-24 months: 3.7-5.3 10^6/cu mm
2-9 years: 3.9-5.3 10^6/cu mm
10-17 years: 4.1-5.1 10^6/cu mm
≥18 years: 4.2-5.4 10^6/cu mm
HEMOGLOBIN
Males
0-8 days: 14.5-22.5 g/dL
9 days-24 months: 10.5-13.5 g/dL
2-9 years: 11.5-15.5 g/dL
10-17 years: 13.0-16.0 g/dL
≥18 years: 14.0-18.0 g/dL
Females
0-8 days: 14.5-22.5 g/dL
9 days-24 months: 10.5-13.5 g/dL
2-9 years: 11.5-15.5 g/dL
10-17 years: 12.0-16.0 g/dL
≥18 years: 12.0-16.0 g/dL
Critical values (automatic call-back): <7.0 g/dL or >20 g/dL (adults)
HEMATOCRIT
Males
0-8 days: 45-67%
9 days-24 months: 33-39%
2-9 years: 34-45%
10-17 years: 37-49%
≥18 years: 42-52%
Females
0-8 days: 45-67%
9 days-24 months: 33-39%
2-9 years: 34-45%
10-17 years: 36-46%
≥18 years: 37-47%
Critical values (automatic call-back): <30% or >70% (newborns: 0-14 days)
MCV
Males
0-8 days: 95-121 fl
9 days-24 months: 70-92 fl
2-9 years: 75-95 fl
10-17 years: 78-98 fl
≥18 years: 80-94 fl
Females
0-8 days: 95-121 fl
9 days-24 months: 70-92 fl
2-9 years: 75-95 fl
10-17 years: 78-98 fl
≥18 years: 81-99 fl
MCH
0-8 days: 31-37 pg
9 days-24 months: 23-31 pg
2-9 years: 25-33 pg
≥10 years: 27-31 pg
MCHC
0-8 days: 30-37%
9 days-24 months: 30-36%
≥2 years: 33-37%
RDW
0-8 days: 14-18%
9 days-24 months: 11.5-14.5%
≥2 years: 11.5-14.5%
PLATELET COUNT
150-400 x 10^3/cu mm
Critical values (automatic call-back): <30 x 10^3/cu mm or >1,000 x 10^3/cu mm
Day(s) Test Performed
Monday through Sunday
Methodology
Includes WBC count, RBC count, hemoglobin, hematocrit, MCV, MCH, MCHC, RDW, and platelet count.
Specimen Requirements
Specimen must arrive within 24 hours of draw.
Draw blood in a lavender-top (K2-EDTA) tube(s). For pediatric specimen, collect one full pink-top (K2-EDTA) BD Microtainer® MAP Microtube. Label specimen with patient’s name (first and last), date of birth, date and time of draw and phlebotomist’s initials.
*Collection tube must be filled to ½ of its intended total volume to ensure adequate blood to anticoagulant ratio.
Specimen stability: 24 hours at room temperature
48 hours refrigerated at 2-8°C
Minimum volume: 250 µL
Specimen rejection criteria:
Clotted blood
Specimens that are > 24 hours old and kept unrefrigerated
Collection tube is less than one-half its intended volume
Improper patient identification
Test Classification and CPT Coding
85027