The range for a normal test result depends on your age and gender. For adults younger than 40, normal levels are typically in the range of: 107 to 139 mL/min or 1.78 to 2.32 mL/s (SI units) for men. 87 to 107 mL/min or 1.45 to 1.78 mL/s (SI units) for women. Creatinine clearance rates go down as you age.For every decade after age 40, a normal test result is 6.5 mL/min less than the numbers above. For newborns, the normal range is 40 to 65 mL/min. An abnormal creatinine clearance rate may mean you have a problem with your kidneys.Or it may mean a problem somewhere else in your body is affecting blood flow to the kidneys.ealthy kidneys remove creatinine from the blood. It then passes out of your body through urine. The creatinine clearance test usually compares the creatinine level in a 24-hour urine sample with the creatinine level in your blood. This tells your doctor how well your kidneys are working.
According to the Denver II Developmental Assessment milestone's chart, infants can usually: 1  stand, holding on to things between 6 1/2 to 8 1/2 months. 2  pull to a standing position between 8 to 10 months. 3  stand for about 2 seconds between 9 to 11 1/2 months.  stand alone between 10 1/2 to 14 months.
The muscles they need to use develop gradually from birth, finally getting strong enough sometime between four and seven months. By the time they're eight months old, 90 per cent of babies can sit well without support. While you can prop your baby in a sitting position almost from day one, true independent sitting doesn't begin until your baby has head control. Starting at about four months, your baby's neck and head muscles strengthen rapidly, and she'll learn to raise and hold her head up while she's lying on her stomach.