Table 2.

Sensitivity, specificity, positive predictive value and negative predictive value for selected cutoffs for the urine protein–creatinine ratio and the urinalysis for predicting ≥300 mg protein per 24 h urine

Test result	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)
UPCR
≥0.15a	96	53	66	94
≥0.17	91	58	67	88
≥0.19	89	70	74	88
≥0.24	73	87	84	78
≥0.28	66	95	93	75
≥0.39	55	100	100	71
UA
≥Negative	100	0	48	–b
≥1+	41	100	100	65
≥2+	23	100	100	58
≥3+	11	100	100	55

Abbreviations: UA, urinalysis; UPCR, urine protein–creatinine ratio.

^aUsing a cutoff of ≥0.15, two subjects with significant 24-h proteinuria (304 and 336 mg) were missed.

^bThis number could not be calculated due to 0 in the denominator.