7yrs old girl had several cystitis with micro and macro hematourea. so her doc started testings. she never has proteins in morning urine, but she has elevated proteins in proteinurea per l, still normal finding per 24h. 198mg/l and 98mg per day, why?

There are various forms of kidney conditions that may occur. Some are related to genetic factors. It is important to monitor her blood pressure and to follow up with a Pediatric Nephrologist. This is a summary of conditions: https://www.tuftschildrenshospital.org/patient-care-services/departments-and-services/nephrology/clinical-care-services/cystic-kidney-disease Please follow up.

I answered your question before. Due to cystitis, blood and globulin in the urine are high so total protein by quantification will be high but that result does not reflect kidney condition. The urine dipstick test which detects albumin in the urine will be negative in case protein in the urine is made up mainly by blood and globulin. That result means your girl voided about 500 cc/day.

Recurrent bouts of cystitis in a child should be investigated by a Urologist. Do not get hung up on proteinuri. Once recurrent cystits is investigated and treated properly protien problem will disappear.

In addition to a urologist, has a nephrologist been involved in her care and has glomerulonephritis been ruled out as a cause of her microscopic and gross hematuria? Hopefully there is no kidney pathology and cystitis explains all her findings.