Today's technologies allow testing on an impressively wide variety of samples collected from the human body. Learn about these samples and how they are collected to ensure accurate and reliable testing.
A long, thin hollow tube; in the kidney, a structure that connects to the glomerulus and helps the kidney retain needed small substances (such as water, electrolytes, glucose, calcium) while allowing elimination of waste products. Its contents eventually drain into the collecting system of the kidney as urine.
Just added -- This test is used to monitor your blood sugar ( glucose ) levels; to evaluate changes and trends in your glucose levels over time. Read more .