A recent study showed that a urine test for certain proteins can predict obstructive sleep apnea in pediatric patients. In this study, 60 children with documented obstructive sleep apnea had their urine proteins compared with 30 children with snoring only and another 30 normal controls. Four specific proteins, uromodulin, urocortin-3, orosomucoid-1, and kallikrein, were found to predict the presence of obstructive sleep apnea with 95% accuracy.
The authors postulate that these proteins are the byproducts of various markers of inflammation and metabolism. This this an interesting study, and I’m sure there are implication in adult populations.