Blood Smear Evaluation Tutor

Case Description:

17 year old Caucasian male from instant care.
The automated diff flagged for immature granulocytes.
CBC:
RBC: 3.98 X10^6/mm3 (4.50-5.90)
WBC: 7.5 X10^3/mm3 (4.5-11.0)
Hgb: 13.5 gm/dl (13.5-17.5)
Hct: 38.5 % (40.0-51.0)
MCV: 96.6 fl (80.0-100.0)
MCH: 33.8 pg (26.0-34.0)
MCHC: 35.0 gm/dl (31.0-37.0)
RDW: 12.6 % (11.5-14.5)

Platelet Count: 225 X10^3/mm3 (130-400)

Automated Diff (in percent):
Lymphocytes: 32.9
Neutrophils: 55.1
Monocytes: 10.0
Eosinophils: 1.1
Basophils: 0.9