Cancer Screening lab tests in LifeExtension Lab Test Test Cost Prostate Specific Antigen (PSA) Blood Test $31.00 Fecal Occult Blood (Immunoassay) Fecal Test $138.75 Prostate-specific Antigen (PSA), Ultrasensitive Blood Test $99.00 Prostate Specific Antigen (PSA) Free with Total Ratio Blood Test $61.00