Thank you for you article. However, I notice difference in the unit rate for the reference intervals for plasma CoQ10 between your article and the reference NCBI, Basically, your article says it is usually between 0.4 – 1.9 mg/L (or μg/mL) [3]. While the reference source NCBI says CoQ10 range from 0.40 to 1.91 micromol/l in healthy adults.

Please advise which one is accurate. Thank you.