What is a normal selenium level?
The short answer
A typical US lab prints a normal selenium range of 70–150 µg/L. That range exists to catch disease, not to describe your best.
Nobody we follow has put a number on your selenium level. They talk about the dose you take, not the level in your blood.
What selenium measures
A trace mineral your thyroid and antioxidant enzymes depend on.
The gap between too little and too much is narrower than for most minerals.
Common questions
What is a normal selenium level?
Most US labs print 70–150 µg/L. Your report grades you against that range. It exists to catch disease, not to describe your best.
What does your selenium number mean?
On a typical lab range, under 70 µg/L is low, 70 to 150 is normal and over 150 is high. Your own report prints its range next to your number, and that is the one your lab uses. Nobody we follow has drawn a line inside that range.
What does the selenium test measure?
A trace mineral your thyroid and antioxidant enzymes depend on. The gap between too little and too much is narrower than for most minerals.
Why is there no target here?
Because the people we follow discuss selenium as something you eat or take. Nobody has said what the level in your blood should be.