Specimen

Blood

Collection Medium:

 
Lavender top tube (EDTA)

Minimum:

Full draw; any size lavender top; (or fingerstick)

Testing Schedule:

24 hrs/day, 7 days a week, including holidays.

Analytic Time:

Routine turnaround time is approximately 2.5 hr.

Reference Range:

ADULT RANGES UNLESS NOTED
                           Male                 Female
WBC*                 3.7-10.5 k/mm3          3.7-10.5 k/mm3
Hemoglobin*         13.2-17.7 g/dL          11.9-15.5 g/dL
Hematocrit* (pcv)     40-55%                  35-47%
Platelets*           150-400 k/mm3           150-400 k/mm3
Red Blood Count
 18 yr+              4.5-6.2 millions/mm3    4.0-5.2 millions/mm3
 11 yr - <18 yr      4.3-5.6 millions/mm3    3.9-5.1 millions/mm3
 5 yr - <11 yr       4.3-5.2 millions/mm3    4.1-5.2 millions/mm3
 1 yr - <5 yr        3.8-5.5 millions/mm3    3.8-5.2 millions/mm3
 6 mo - <1 yr        3.9-5.5 millions/mm3    3.9-5.1 millions/mm3
 3 mo - <6 mo**      3.1-5.1 millions/mm3    3.1-5.1 millions/mm3
 2 mo - <3 mo**      2.7-4.5 millions/mm3    2.7-4.5 millions/mm3
 1 mo - <2 mo**      3.1-5.3 millions/mm3    3.1-5.3 millions/mm3
 0 - <1 mo**         3.9-5.9 millions/mm3    3.9-5.9 millions/mm3
RDWCV                9.0-14.5%               9.0-14.5%
RDWSD               35.1-43.9 fL            36.4-46.3 fL
MCV                  82-99 femtoliters       82-99 femtoliters
 12 yr - 18 yr       79-95 femtoliters       79-95 femtoliters
 6 yr - <12 yr       77-90 femtoliters       77-90 femtoliters
 1 yr - <6 yr        75-90 femtoliters       75-90 femtoliters
 6 mo - <1 yr        70-85 femtoliters       70-85 femtoliters
 3 mo - <6 mo        74-108 femtoliters      74-108 femtoliters
 1 mo - <3 mo        91-112 femtoliters      91-112 femtoliters
 Birth - <1 mo       88-123 femtoliters      88-123 femtoliters
MPV                 9.4-12.3 fL             9.4-12.3 fL
MCH                  25-35 picograms         25-35 picograms
 12 yr - 18 yr       25-33 picograms         25-33 picograms
 6 yr - <12 yr       25-33 picograms         25-33 picograms
 1 yr - <6 yr        23-31 picograms         23-31 picograms
 6 mo - <1 yr        23-31 picograms         23-31 picograms
 3 mo - <6 mo        25-35 picograms         25-35 picograms
 1 mo - <3 mo        27-36 picograms         27-36 picograms
 Birth - <1 mo       31-37 picograms         31-37 picograms
MCHC                 32-36 g/dL RBC          32-36 g/dL RBC
 1 yr - 18 yr        31-37 g/dL RBC          31-37 g/dL RBC
 6 mo - <1 yr        32-36 g/dL RBC          32-36 g/dL RBC
 Birth - <6 mo       28-36 g/dL RBC          28-36 g/dL RBC

*A more complete listing of normal ranges based on age and sex are
 listed under each individual test code.

** Values refer to full term infants.

Comments:

The Hematology Laboratory will make and review a smear if any of the
following conditions apply:  (1) patient's first CBC sample AND results
meet laboratory review criteria; (2) questionable (not necessarily
abnormal) CBC results; (3) CBC results are significantly different from
that of a previous specimen; (4) a physician specifically requests a
smear review or a "Pathologist Review Blood Smear".

EDTA samples are saved in the laboratory until 4:00 p.m. the day after
receipt.  Upon request, a smear could be made up until that time if
necessary.  However, as the specimen ages, cell disintegration and
distortion may occur.  Stained smears are held in the laboratories for
approximately two months.

Please refer to the PowerPoint Presentation for further information.

Methodology:

Flow Cytometry
hgb = Colorimetric

CPT Code:

85027

See Additional Information:
Hematology Critical Lab Values
Hematology Pediatric Reference Ranges