Table 4.

Comparison of urinary LH values in the main population groups

	n.	Mean	SD	min	p50	max	% Subjects uLH ≤ 0,45 UI/L
uLH in prepubertal patients	40	0,16 UI/L	0,05	0,10	0,20	0,30	100%
uLH in pubertal patients treated with GnRHa	30	0,20 UI/L	0,09	0,10	0,20	0,40	100%
uLH in pubertal patients NOT treated with GnRHa	60	5,12 UI/L	4,05	0,20	2,10	32,7	23,3%

AUC area under the curve. C.I. confidence interval. GnRHa GnRH analogs. NPV negative predictive value. pLH luteinizing hormone peak serum. p50 median.PPV positive predictive value. SD standard deviation. Sn sensitivity. Sp specificity. sLH luteinizing hormone basal serum. uLH luteinizing hormone urinary levels