Renin is a protein (enzyme) released by special kidney cells when you have a decreased salt (sodium) level or low blood volume. If you have high blood pressure, your doctor may order a renin and aldosterone test to help determine the cause of your elevated blood pressure. Test results can help guide your doctor in choosing the correct treatment.
Quick Answer. Snakes can have live births, or they can lay eggs in order to have babies. Snake can reproduce every one to three years, and they can have up to 150 snake babies at a time. Keep Learning.
How long does it take for snake eggs to hatch? A: Snakes come in a variety of types, and the time that it takes each type of snake's eggs to hatch varies. The king cobra of the Southeast Asian rain forest lays between 18 and 50 eggs which all take between 70 and 77 days to hatch.