Lab references

Complete Blood Count and Differential

White blood cell count (WBC) — lab reference

Lab-specific. Interpret with symptoms, medication effects, and differential.

Updated Sep 23, 2026 · Educational reference

Purser Wellness approved rule

Unit: x10³/µL

Male: 3.4-9.6

Female: 3.4-9.6

How to read this marker

Lab-specific. Interpret with symptoms, medication effects, and differential.

The wider testing context

Typical adult starting intervals. Review altitude, smoking, hydration, pregnancy, age, ethnicity, medications, and local analyzer ranges.

Using this reference

This is the approved adult, nonpregnant baseline unless the rule explicitly states otherwise. Keep the performing laboratory’s reference interval separate from this Purser Wellness rule. Match units and review the specimen, method, timing, medicines and relevant clinical context before interpreting a result. These pages do not calculate a personal high/low status or prescribe treatment.

A question to bring to your visit

Which parts of the White blood cell count (WBC) rule apply to my report’s method, units and collection conditions, and what other findings should we review alongside it?

Approved by Dr. Daniel Purser, MD · PW-LABS-1.0. The source laboratory’s interval remains separate.

Names you may see

White blood cell count (WBC) · WBC · White blood cell count