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.
Best Answer: Just because they are reptiles does not mean that they lay eggs. The king cobra does, but there are several species of snake that give birth to live young, not like mammal but the eggs actually hatch inside the mother so the snake does not actually lay the eggs. Example the common garter snake.