What Is a Creatinine Test? A creatinine test, also called a serum creatinine test, measures how well your kidneys are working. Creatinine is a waste product from the normal breakdown of muscle tissue.

It is one of the waste products in the body that comes from the normal wear and tear of muscles. The ‘normal’ level of serum creatinine is dependent on multiple factors like age, gender, body size, ...

Wendy Wisner is a journalist and international board certified lactation consultant (IBCLC). She has written about all things pregnancy, maternal/child health, parenting, and general health and ...

Creatinine is essentially a metabolite of creatine phosphate, a compound that acts as a source of energy in muscle. In other words, creatinine is a waste product generated from the normal wear and ...