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 give live birth and some lay eggs. Most vipers, boa constrictors, garter snakes and a few other species of snake give live birth. Most of the others build nests an â¦ d lay eggs and they are very protective of their nests.King cobras are good examples of this.ome snakes (mostly vipers and boas) appear to give birth to live young. What really happens is that they retain eggs inside instead of laying them, and the young emerge when â¦ they hatch.