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.
Some snakes, such as boas, rattlesnakes and garter snakes, give birth to live young. That means that the baby snakes develop inside their mother. When they are born they are covered with a thin membrane, kind of like a goopy baggie. The baby uses an egg tooth to rip out of the membrane and wriggle free.