Question
A child was found to have 1+ protein in their urine during a urine test. Subsequently, they developed a cold and tonsillitis, and the urine protein increased to 3+. After the inflammation healed, the urine protein returned to normal. However, two weeks and one month later, protein in the urine appeared again, accompanied by fever and sore throat.
Answer
Proteinuria refers to a condition where the urine contains less than 150mg/24h of protein, typically containing only trace amounts of protein. Physiological proteinuria increase refers to a temporary increase in proteinuria without pathological changes under specific physiological conditions. Common causes include intense exercise (exercise-induced proteinuria), changes in body position (postural proteinuria), sudden exposure to cold or heat, or emotional excitement. In these cases, the quantitative measurement of protein is usually not very high. This is in response to the question “My daughter’s urine test shows 1+ protein,” hoping it will be helpful to you. Wishing you good health.