Urine and Ultrasound Screening for Kidney Disease in Children

When an infant was born, he/she will receive the first urine and ultrasound screening in 3 months in Kunshan/Qidong City Maternal and Child Health Hospital.In Kunqi Cohort, 9,000 will complete 3 years follow-up(urine screening once every year, another ultrasound screening in 24-30 months). Urine sample (50ml) will be stored only once within one year. Dry blood filter paper(120ul) will be stored once a year when he or she has a blood routine for future study.1,000 children will complete 6 year follow-up(receive urine and ultrasound screening once every year). Urine sample (50ml) will be stored once a year. Dry blood filter paper(120ul) will be stored once a year when he or she has a blood routine for future study. The 14 urine test items include: leukocytes, urobilinogen, microalbumin, protein, bilirubin, glucose, ascorbic acid, specific gravity, ketone bodies, nitrite, creatinine, pH, occult blood, and urinary calcium. Ultrasound test will screen for kidneys, ureters and the bladder.