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.
A maximum of 20 eggs can be laid by each snake. Like other reptiles, Racer Snakes do not protect their young, nor feed their young. Black Racer snakes are born about six inches long and will rely on their camouflage in their early days for survival. Baby Racers look much different than adults.