Blood Smear Evaluation Tutor

Case Description:

13 year old African American female from the emergency room.
The automated diff flagged for RBC interference.
CBC:
RBC: 2.40 X10^6/mm3 (4.00-5.20)
WBC: 13.1 X10^3/mm3 (4.5-11.0)
Hgb: 7.8 gm/dl (12.0-16.0)
Hct: 23.6 % (35.0-46.0)
MCV: 83.1 fl (80.0-100.0)
MCH: 32.5 pg (26.0-34.0)
MCHC: 33.0 gm/dl (31.0-37.0)
RDW: 29.2 % (11.5-14.5)

Platelet Count: 352 X10^3/mm3 (130-400)

Automated Diff (in percent):
Lymphocytes: 24.1
Neutrophils: 65.4
Monocytes: 6.8
Eosinophils: 2.6
Basophils: 1.1