What is normal normetanephrine and metanephrine levels?

Normal normetanephrine and metanephrine levels vary slightly between laboratories, but the following ranges are generally considered normal:

- Normetanephrine: 30-200 pg/mL (picograms per milliliter)

- Metanephrine: 10-50 pg/mL

These levels may be higher in children and pregnant women, and may also increase with age.