Aldolase blood test
Quick answer: An aldolase test measures an enzyme found mainly in muscle and liver. Doctors order it to look into muscle damage or inflammation, for example in muscle diseases.
- SampleBlood
- TakesAbout 5 minutes
- Before the testAvoid heavy exercise for a day or two before the test, as it can raise the level.
How the test is done
- 1You avoid heavy exercise for a day or two beforehand
- 2The arm is cleaned and a band is tied above the elbow
- 3A needle takes a blood sample from a vein
- 4The lab measures aldolase activity in the sample
What your results can mean
Reading your report
Normal ranges differ between labs and by age and sex, so discuss your result with your doctor.
If the result is outside the usual range
A high level can be seen with muscle damage or inflammation, such as muscular dystrophy or myositis, and sometimes with liver problems. Recent hard exercise or injury can also raise it.
Who usually has this test
People with muscle weakness, pain or suspected muscle disease, often when CK results need more context.
Risks and aftercare
Slight bruising at the needle site is possible.
Names and options
Also called: serum aldolase
Listed by the hospital as
- ALDOLASE, SERUM
Questions about this test
How is aldolase different from CK?
Both are muscle enzymes that rise with muscle damage. CK is used more often, but aldolase can sometimes be raised when CK is normal, especially in some inflammatory muscle conditions.
Why should I avoid exercise before the aldolase test?
Hard exercise causes minor muscle strain that can raise aldolase for a day or two. Resting first helps the result reflect any underlying problem.
Can liver problems raise aldolase?
Yes, aldolase is also found in the liver, so liver conditions can raise it. Your doctor reads it with other tests.
Related tests
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This page explains each test in general terms so you know what to expect. It is not medical advice: your doctor decides which tests you need and what your results mean. Reference ranges differ between laboratories. Updated 4 November 2026.