WBC on normal low

I had my annual blood test as result below, my friend said the WBC is a little low, Do I need to concern?  My doctor didn't metion anything.

WBC 5.6   (4-10)
RBC 4.36  (3.9-5.4)
Hemoglobin 13.9 (12-16)
Hematocrit   39.9 (36-47)
MCV 92  (80-100)
MCH 31.9    (27-33)
MCHC  34.8  (32-36)
RDW 11.9  (11.5-15)
Platelet Count  305   (140-450)
Neutrophil 62  (49-74)
Lymphocytes 31   (26-46)
Monocyte 5   (0-12)
Eosinophil  2 (0-5)
Basophil 0 (0-2)

Abs. Neutrophil 3.5 (2.0-8.0)
Abs. Lymphocytes1.8   (1.0-5.1)
Abs. Monocyte 0.3   (0-0.95)
Abs. Eosinophil  0.1 (0.0-0.6)
Abs. Basophil 0.0   (0-0.2)