Why Do Doctors Require A Blood Test Before An MRI?

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If you are scheduled to get an MRI, there is a chance your doctor might require that you get a blood test before the MRI. This is quite common in many cases, yet it is not always needed. It will depend on your age and health, and it will also depend on the type of MRI you are getting. Here are several things to know about this blood test that is needed before an MRI.

It's Only Needed for Contrast Tests

There are two main types of MRIs: one that uses contrast agent and one that does not. If you are getting an MRI that does not require the use of a contrasting agent, you will not need to have a blood test. If you are getting an MRI that will use a contrasting agent, you may or may not need a blood test prior to the MRI.

It's Needed for Certain Groups of People

If your MRI will use a contrasting agent, you will only need a blood test if you are 70 years old or older and if you have some type of health problem, primarily a health problem that involves your kidneys. The agent used during an MRI is placed into your body during the test. The purpose is to allow the healthcare professionals the ability to clearly see what is going on in your body. This agent allows them to see clearly the inside of your body, and this helps them diagnose problems.

The problem is that this contrasting agent must work its way out of your body. If it doesn't, it could lead to health problems. If your kidneys are not functioning at full capacity, they will have problems eliminating this agent from your body, and that is what the blood test is for.

The Blood Test is Called a Creatinine Blood Test

The blood test used for this purpose primarily measures the level of creatine in your body. If your level is high enough, you will have a very low risk of any problems resulting from the MRI. If your level is too low, it indicates an increased risk of problems. If you get this test and pass at a healthcare center, you can go ahead with your MRI. If you do not pass, you will need to talk to your doctor about this to find out what you should do.

If you need an MRI, it is likely because the doctor suspects a problem of some kind in your body, and you should go ahead and get the MRI so you can find out. To learn more about blood tests, contact a healthcare center in your city today.