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.
The ones that lay eggs, lay eggs: Then they incubate the eggs for about 60 days. And then the eggs hatch. And you have baby snakes! Most people would be suprised to know that many snakes are good mothers, and are very protective of their eggs. But baby snakes are born ready to hunt and defend themselves, and usually begin hunting within a few days to a week of hatching.