Complete Blood Count - UChicago Medicine Medical Laboratories

Specimen and Container/Tube

Specimen Type: Whole blood

Preferred Specimen: lavender top

Other Acceptable specimens: not applicable

Volume

Preferred Volume: 4.0 mL

Minimum Volume: 1.0 mL

Specimen Stability

Storage Temperature	Stability
Room temperature (20 - 25°C)	24 hours
Refrigerated (2 - 10°C)	24 hours
Frozen (-20°C)	not acceptable

Collection Instructions

Collect specimen per standard laboratory collection procedures.

Specimen Handling and Transport Instructions

UCMC Onsite Instructions: Collect specimen per standard collection procedure and send to laboratory immediately.

UCMC Offsite and UC MedLab Outreach Instructions: Collect specimen per standard collection procedure and send to laboratory immediately. Specimens must be received within 8 hours. If transport is delayed, refrigerate specimens prior to transport.

Rejection Criteria

Common specimen rejected situations include: incorrect specimen type, insufficient volume, missing or incomplete specimen identifiers, incorrect specimen transport, or specimens outside stability limits.
Frozen or heated specimens will be rejected
Clotted or quantity not sufficient specimens are not suitable for testing and will be rejected

Reference Values

Analyte	Age	Sex	Reference Range
WBC	0 days	Male and female	7.4 – 28.0 x10³/uL
WBC	1 day	Male and female	6.5 – 30.6 x10³/uL
WBC	7 days	Male and female	4.1 – 19.8 x10³/uL
WBC	14 days	Male and female	3.8 – 18.5 x10³/uL
WBC	1 month	Male and female	3.5 – 17.7 x10³/uL
WBC	6 months	Male and female	6.0 – 17.3 x10³/uL
WBC	1 year	Male and female	5.5 – 16.8 x10³/uL
WBC	2 years	Male and female	5.0 – 15.8 x10³/uL
WBC	4 years	Male and female	4.0 – 13.8 x10³/uL
WBC	6 years	Male and female	3.7 – 13.0 x10³/uL
WBC	8 years	Male and female	3.7 – 12.5 x10³/uL
WBC	10 years	Male and female	3.5 – 12.3 x10³/uL
WBC	12 years and up	Male and female	3.5 – 11.0 x10³/uL
RBC	0 days	Male and female	3.90 – 5.48 x10⁶/uL
RBC	1 day	Male and female	4.00 – 6.57 x10⁶/uL
RBC	7 days	Male and female	3.90 – 6.27 x10⁶/uL
RBC	14 days	Male and female	3.60 – 6.18 x10⁶/uL
RBC	1 month	Male and female	3.00 – 5.38 x10⁶/uL
RBC	2 months	Male and female	2.70 – 4.88 x10⁶/uL
RBC	3 months	Male and female	3.10 – 4.48 x10⁶/uL
RBC	6 months	Male and female	3.70 – 5.28 x10⁶/uL
RBC	2 years	Male and female	3.90 – 5.28 x10⁶/uL
RBC	6 years	Male and female	4.00 – 5.18 x10⁶/uL
RBC	12 years and up	Male	4.47 – 5.91 x10⁶/uL
RBC	12 years and up	Female	3.88 – 5.26 x10⁶/uL
HGB	0 days	Male and female	13.2 - 19.1 g/dL
HGB	1 day	Male and female	14.2 – 22.1 g/dL
HGB	7 days	Male and female	13.2 – 21.1 g/dL
HGB	14 days	Male and female	12.3 – 20.1 g/dL
HGB	1 month	Male and female	9.8 – 17.6 g/dL
HGB	2 months	Male and female	8.8 – 13.7 g/dL
HGB	3 months	Male and female	9.3 – 13.2 g/dL
HGB	6 months	Male and female	10.3 – 13.2 g/dL
HGB	2 years	Male and female	11.3 – 13.2 g/dL
HGB	6 years	Male and female	11.3 – 15.2 g/dL
HGB	12 years and up	Male	13.5 – 17.5 g/dL
HGB	12 years and up	Female	11.5 – 15.5 g/dL
HCT	0 days	Male and female	42 – 60 %
HCT	1 day	Male and female	45 – 67 %
HCT	7 days	Male and female	42 – 66 %
HCT	14 days	Male and female	39 – 63 %
HCT	1 month	Male and female	31 – 55 %
HCT	2 months	Male and female	28 – 42 %
HCT	3 months	Male and female	29 – 41 %
HCT	6 months	Male and female	33 – 39 %
HCT	2 years	Male and female	34 – 40 %
HCT	6 years	Male and female	35 – 45 %
HCT	12 years and up	Male	41 – 53 %
HCT	12 years and up	Female	36 – 47 %
MCV	0 days	Male and female	97.0 – 117.0 fL
MCV	1 day	Male and female	94.0 – 120.0 fL
MCV	7 days	Male and female	87.0 – 125.0 fL
MCV	14 days	Male and female	85.0 – 123.0 fL
MCV	1 month	Male and female	84.0 – 122.0 fL
MCV	2 months	Male and female	76.0 – 114.0 fL
MCV	3 months	Male and female	73.0 – 107.0 fL
MCV	6 months	Male and female	69.0 – 85.0 fL
MCV	2 years	Male and female	74.0 – 86.0 fL
MCV	6 years	Male and female	76.0 – 94.0 fL
MCV	12 years and up	Male and female	81.0 – 99.0 fL
MCH	0 days	Male and female	30 – 36 pg
MCH	1 day	Male and female	30 – 36 pg
MCH	7 days	Male and female	27 – 39 pg
MCH	14 days	Male and female	27 – 39 pg
MCH	1 month	Male and female	27 – 39 pg
MCH	2 months	Male and female	26 – 33 pg
MCH	3 months	Male and female	25 – 34 pg
MCH	6 months	Male and female	23 – 30 pg
MCH	2 years	Male and female	24 – 29 pg
MCH	6 years	Male and female	25 – 32 pg
MCH	12 years and up	Male and female	26 – 33 pg
MCHC	0 days	Male and female	30 – 36 g/dL
MCHC	1 day	Male and female	29 – 37 g/dL
MCHC	7 days	Male and female	28 – 38 g/dL
MCHC	14 days	Male and female	28 – 38 g/dL
MCHC	1 month	Male and female	29 – 37 g/dL
MCHC	2 months	Male and female	29 – 37 g/dL
MCHC	3 months	Male and female	30 – 36 g/dL
MCHC	6 months	Male and female	30 – 36 g/dL
MCHC	2 years	Male and female	31 – 37 g/dL
MCHC	6 years	Male and female	31- 37 g/dL
MCHC	12 years and up	Male and female	32 – 35 g/dL
RDW	16 years and up	Male	<14.3 fL
RDW	16 years and up	Female	<15.0 fL
Platelet	16 years and up	Male and female	150 – 450 x10³/uL
MPV	16 years and up	Male and female	9.6 – 12.6 fL

Critical Values

Analyte	Unit	Low	High	Age
WBC	10³/µL	<1.0	>30.0	All
HCT	%	<20	>60 >69.0 patients <30 days	All
HGB	g/dL	<6.0	>20.0 >22.0 patients <30 days	All
Platelet	10³/µL	<30	>1,000	All

Turnaround Time

Turnaround times are relative to the time the specimen is received in the test laboratory.

STAT Turnaround Time: 60 minutes

Routine Turnaround Time: 240 minutes

Testing Schedule: 24/7

Clinical Indications

Screening test for various diseases
Useful in the diagnosis of disease states such as anemias, leukemias, allergic reactions, viral, bacterial, and parasitic infections.

Test Components

WBC, RBC, HGB, HCT, MCV, MCH, MCHC, RDW, Platelet Count, MPV

Methodology

Sysmex XN

CPT Codes

85027

LOINC Codes

WBC 6690-2, RBC 789-8, HCT 4544-3, HGB 718-7, MCV 787-2, MCH 785-6, MCHC 786-4, RDW 788-0, PLT 777-3, MPV 32623-1

Synonyms/Search Keywords

CBC, Hemogram, Complete Blood Count

Last Reviewed Date

9/5/2024

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