ESR stands for erythrocyte sedimentation rate, which is a blood test that measures the rate at which red blood cells settle to the bottom of a tube in one hour.
The normal range for ESR can vary depending on age and gender, but generally, a value of 0-15 mm/hour for men and 0-20 mm/hour for women is considered normal.
If an ESR value is higher than the normal range, it could indicate an underlying inflammatory condition or infection. However, a single ESR result alone cannot determine the cause of the elevated value. Further testing and evaluation by a healthcare professional is needed to determine the underlying cause of an elevated ESR.