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Creatinine Blood Test

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Creatinine circulates in the bloodstream as the result of the breakdown of creatine in the muscles.

What is this test?

The Creatinine Blood Test works by collecting a blood sample and measuring blood levels of creatinine, a waste product typically excreted through the kidneys. This test also measures eGFR — how much blood per minute your kidneys filter. Low eGFR can indicate poor kidney function.

This test can be ordered as part of a general wellness exam, or if someone exhibits signs of kidney disease. There are no fasting requirements for this test.


+$15 service fee

Price does not include the Physician Service Fee ($6) and the Lab Collection Fee ($9). These non-refundable fees cover the ordering and oversight of lab tests and follow-up services when appropriate.

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Provided by Quest Diagnostics

Quest test codes:

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Frequently asked questions l

Your provider may order a blood test for creatinine to evaluate kidney function. It is often ordered before or after procedures that may put a strain on the kidneys, to monitor any changes. 

This test is often ordered as part of a routine wellness exam. Your provider may also wish to order a Creatinine Blood Test if you’ve exhibited signs of kidney disease, including the following symptoms:  

  • Fatigue
  • High blood pressure
  • Malaise
  • Muscle cramps
  • Vomiting
  • Swollen ankles
  • Dry, itchy skin

You cannot take a Creatinine Blood Test at home — this test can only be administered by a medical professional at a licensed testing facility. 

Once you receive the results of your blood test for creatinine, you will need to consult with your provider. Only a medical professional can advise you on the results of your creatinine blood levels and help you develop a treatment plan if necessary. 

Creatinine levels tend to increase with age, mostly because the kidneys and other organs undergo more stress as individuals grow older. However, abnormally low or high levels of creatinine can indicate an underlying issue and should be discussed with your provider. 

There are no special requirements for the Creatinine Blood Test. Your provider will draw a blood sample from a vein in your arm. Creatinine Blood Test results typically take 1-2 business days to process. 

The cost of a Creatinine Blood Test listed on Tripment Health is transparent and final — you will never be asked to pay additional fees at the testing facility, or receive a surprise bill down the road. 

Tripment Health has partnered with nearly 7,000 lab test facilities across 48 states. Finding a Creatinine Blood Test, current procedural technology (cpt) code 375, is easier than ever. Add the lab tests you need to your cart, then select a testing facility conveniently close to you.