25th May 2025

Researchers have developed a new blood test to rule out early-stage lung cancer.

Researchers have developed a new blood test to rule out early-stage lung cancer. The mean blood test value in the normal population is 45mmol/L with a standard deviation of 3mmol/L. The normal range is set to include 99.8% of the data.

What is the lower limit of normal in this case?

Select the SINGLE most appropriate option from the list below. Select ONE option only.