Sodium is an essential nutrient that must be consumed in moderation through the diet. Learn how long it stays in your system.

A 24-hour urine collection test is a laboratory test to measure the content of certain substances in the urine, which can be used as a diagnostic indicator of the function of the kidneys. The test ...

SAN DIEGO — Omitting 24-hour urine testing from multiple myeloma response assessments does not compromise accurate tracking of patients' responses to treatment, a new analysis indicates. Overall, ...