Creatine Serum Test

What is the purpose of this test?

Order this Creatine Serum Test to measure creatine levels in a blood sample and helps screen for a deficiency or toxicity. Creatine is a chemical (amino acid) naturally produced in the body that provides muscles with the energy they need to function correctly. Creatine may also be found in foods such as red meat and seafood. Additionally, many consume creatine supplements to improve their exercise performance and muscle mass. In the liver, some creatine breaks down into creatinine. The kidneys then filter the creatinine out of the blood and expel it from the body in urine. However, some individuals may produce too little or too much creatine due to an underlying health condition or overconsumption of supplements.

Individuals mustn't confuse creatine with creatinine, a byproduct of the metabolization of creatine. Creatinine testing is most useful for individuals screening for kidney disease.

What factors may cause abnormal creatine levels?

Many health factors may cause abnormal creatine levels. For example, elevated creatine levels may be caused by conditions such as:

• Amyotrophic lateral sclerosis (ALS)
• Dermatomyositis
• Overuse of creatine supplements
• Myasthenia gravis (MG)
• Malnutrition or starvation
• Muscular dystrophies
• Trauma

Additionally, low creatine levels are caused by diets that do not include meat (vegetarian or vegan). 

When should I order a Creatine Serum Test?

Individuals may order a Creatine Serum Test if they have experienced symptoms related to creatine toxicity or deficiency. Common signs or symptoms of too much creatine include the following:

• Abdominal pain and discomfort
• Bloating
• Diarrhea
• Belching