If your child is anxious about it, work together on ways to stay calm. An ESR test measures how far red blood cells settle to the bottle of a test tube in 1 hour. Inflammation or infection can lead to ...

Here’s a run-down of the most common lab tests your doctor may order and what they look for. Erythrocyte sedimentation rate (ESR) is commonly called “sed rate.” This blood test measures the amount of ...