ESR, or erythrocyte sedimentation rate, is a blood test that measures the rate at which red blood cells settle in a tube over a specific period of time. The normal range of ESR can vary depending on the age and gender of the patient.
In general, for men under the age of 50, a normal ESR is typically between 0 and 15 mm/hr, while for women under the age of 50, a normal ESR is typically between 0 and 20 mm/hr. For men and women over the age of 50, a normal ESR can be slightly higher, with a range of 0 to 20 mm/hr for men and 0 to 30 mm/hr for women.
Therefore, without additional information, it is not possible to determine whether an ESR value of 47 is normal or not. If you have concerns about your ESR result, it is best to discuss it with your healthcare provider, who can interpret the result in the context of your individual medical history and current symptoms.