Results. Creatinine and creatinine clearance tests measure creatinine levels in your blood and urine. These tests give information about how well your kidneys are working. The creatinine clearance value is found from the amounts of creatinine in the urine and blood and from the amount of urine you pass in 24 hours. creatinine clearance test measures how well creatinine is removed from your blood by your kidneys. This test gives better information than a blood creatinine test on how well your kidneys are working. The test is done on both a blood sample and on a sample of urine collected over 24 hours.
Adding pureed foods to your babyâs diet at around 4 months of age introduces a new world of tastes and textures. But knowing when to stop pureed foods -- usually around 1 year of age -- is important for helping your baby develop chewing and swallowing skills.
Breast milk or formula is the only food your newborn needs, and the American Academy of Pediatrics recommends exclusive breast-feeding for the first six months after birth. But by ages 4 months to 6 months, most babies are ready to begin eating solid foods as a complement to breast-feeding or formula-feeding. It's during this time that babies typically stop using their tongues to push food out of their mouths and begin to develop the coordination to move solid food from the front of the mouth to the back for swallowing.