Laboratory Test Information Guide

Details for Complete Blood Count

Test Name: Complete Blood Count
Alternate Name(s): CBC
Leukocyte Count (LKC)
Hemoglobin (Hb)
Hematocrit (HCT)
Mean Cell Volume (MCV)
Platelet Count
Laboratory: Core
Specimen Type: Adult:
4 mL K2 EDTA (Lavender) Vacutainer tube

Pediatric Venous:
2 mL Paeds K2 EDTA (Lavender) Vacutainer

Pediatric (Capillary):
0.5 mL MAP K2 EDTA (Lavender) Microtube
0.5 mL K2 EDTA (Lavender) Microtube
Collection Information: Pediatric Samples:

Minimum volume required is 0.3 mL
To Achieve Non Clotted Specimens:
- Draw second, following a gas for best results
- this tube comes with its sides coated with an anticoagulant to prevent the sample from clotting, therefore, rotate container after each blood drop to allow blood to
mix with the anticoagulant
- flick the tube during collection to encourage the blood to drop to the bottom and mix with the anticoagulant
- do a final mix by gently rocking sample back and forth
- visually check for clots in sample prior to sending to lab do not remove clots, take a new sample
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: As required
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
4 hours
Stat
30 minutes
 
Reference Range: Normal Ranges adopted through concensus by the three London teaching hospitals.
Leukocyte Count (LKC):
>18 years: 4.0-10.0 x 109/L
11-18 years: 4.0-10.0 x 109/L
3-10 years: 5.0-12.0 x 109/L
1 month-2 years: 5.0-15.0 x 109/L
< 1 month: 5.0-34.0 x 109/L
Erythrocyte Count (ERC):
Males:
>18 years: 4.50-6.50 x 1012/L
11-18 years: 4.20-5.60 x 1012/L
3-10 years: 4.00-5.30 x 1012/L
1 month - 2 years: 3.80-5.40 x 1012/L
<1 month:4.10-6.70 x 1012/L
Females:
>18 years: 4.00 - 5.60 x 1012/L
10 years - 18 years: 4.10 - 5.30 x 1012/L
2 years - 10 years: 4.00 - 5.30 x 1012/L
1 month - 2 years: 3.80 - 5.40 x 1012/L
0 min - 1 month: 4.10 - 6.70 x 1012/L

Hemoglobin (Hb):
>18 years: male 135-170 g/L; female 115-160 g/L
11-18 years: male 125-160 g/L; female 120-150 g/L
3-10 years: male and female 110-160 g/L
1 month-2 years: male and female 100-140 g/L
< 1 month: male and female 150-250 g/L
Hematocrit (HCT):
>18 years: male 0.40-0.51 L/L; female 0.34-0.48 L/L
11-18 years: male 0.37-0.48L/L; female 0.36-0.45 L/L
3-10 years: male and female 0.33-0.48 L/L
1month-2 years: male and female 0.30-0.42 L/L
< 1 month: male and female 0.45-0.75 L/L
Mean Cell Volume (MCV):
>18 years & over: 79.0-97.0 fL
11-18 years: 79.0-95.0 fL
3-10 years: 76.0-95.0 fL
2months-2 years: 72.0-93.0 fL
< 2 months: 102.0-120.0 fL
RDW:
12.0-15.0 %
Thrombocytes (Platelet Count):
150-400 x 109/L
Effective Date: 2011-01-14
Revised Date: 2016-06-09
Critical Value: See Interpretive comments
Interpretive Comments: LKC: ≥100 x 109/L

Hb: ≤70 or ≥200 g/L

Thrombocytes (Platelet Count): ≤50 x 109/L
Special Processing:  
Comments:  
Method of Analysis: Impedance-based Hematology analyzer.
Critical Information Required:  
Storage & Shipment:  
System Codes: 
Cerner
CBC
 
Referred To:  

Questions? Comments? Contact Laura Gopaul