Specimen

Blood

Collection Medium:

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
  Adult              4.5-6.2 millions/mm3         4.2-5.4 millions/mm3
  11-18 years        4.3-5.6 millions/mm3         3.9-5.1 millions/mm3
  5-11 years         4.3-5.2 millions/mm3         4.1-5.2 millions/mm3
  1-5 years          3.8-5.5 millions/mm3         3.8-5.2 millions/mm3
  6 months-1 year    3.9-5.5 millions/mm3         3.9-5.1 millions/mm3
  3-6 months**       3.1-5.1 millions/mm3         3.1-5.1 millions/mm3
  2-3 months**       2.7-4.5 millions/mm3         2.7-4.5 millions/mm3
  1-2 months**       3.1-5.3 millions/mm3         3.1-5.3 millions/mm3
  0-1 month**        3.9-5.9 millions/mm3         3.9-5.9 millions/mm3
RDW                  9.0-14.5%                    9.0-14.5%
MCV                  82-99 femtoliters         82-99 femtoliters
  12 yr - 18 yr      79-95 femtoliters         79-95 femtoliters
  6 yr - 11 yr       77-90 femtoliters         77-90 femtoliters
  1 yr - 5 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
MCH                  25-35 picograms           25-35 picograms
  12 yr - 18 yr      25-33 picograms           25-33 picograms
  6 yr - 11 yr       25-33 picograms           25-33 picograms
  1 yr - 5 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
Smear Review             no                        no

*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".  A "yes" in the
Smear Review field indicates a smear was made and any abnormal
findings will be noted under Blood Smear Morphology.  A "no" indicates
a smear was not made.

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.

Methodology:

Flow Cytometry
hgb = Colorimetric

CPT Code:

85027

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