Find out about COVID-19, COVID-19 vaccines, and Mayo Clinic patient and visitor updates.
Brain tumor, breast cancer, colon cancer, congenital heart disease, heart arrhythmia. See more conditions.
Mayo Clinic offers appointments in Arizona, Florida and Minnesota and at Mayo Clinic Health System locations.
Fish should be cooked to an internal temperature of 145 F. But if you don't have a food thermometer, you can determine whether fish is properly cooked by slipping the point of a sharp knife into the flesh and pulling it aside. The flesh should be opaque and separate easily, as in this photograph of poached cod.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press.
A single copy of these materials may be reprinted for noncommercial personal use only. "Mayo," "Mayo Clinic," "MayoClinic.org," "Mayo Clinic Healthy Living," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research.
This site complies with the HONcode standard for trustworthy health information: verify here.