Purser Wellness approved rule
Unit: ng/mL
Male: Common cutoff ≤4.0
Female: Not applicable
How to read this marker
No single normal cutoff fits every patient. Use age, baseline, trend, prostate size, risk factors, and shared decision-making.
The wider testing context
Age, prostate anatomy, symptoms, medications, infection, procedures, and testosterone therapy can materially affect interpretation.
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 PSA, total 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
PSA, total · PSA