This story is sponsored by Intermountain LiveWell. If you've ever wondered why your doctor asks you to do a blood test or provide a urine sample at your annual checkup even if you're feeling perfectly ...

You may feel perfectly fine at your annual checkup, but your doctor still orders lab tests. According to Dr. Sydney LeGuyader, an internal medicine physician at Intermountain Health, that is exactly ...

Learn about the many tests and examinations your blood sample undergoes in a lab. Giving a blood sample during a doctor’s visit is a common procedure. Discover the dizzying array of automated tests ...

This article was reviewed by Felix Gussone, MD. Preparing properly for lab tests helps ensure your results are accurate and reliable. Some tests — like fasting cholesterol or fasting glucose — require ...