TABLE 1.

Results of proficiency testing panel between three laboratories routinely running Up24

CDC panel	Result (pg/ml) in laboratory
	A	B	C
31	16.3	47.8	14
33	14	36.8	5.6
34	5.6	12.6	2.2
35	322.4	313.8	84.8
36	3.1	8.2	1.5
37	70.7	171.9	51.9
38	2.5	7.4	0.9
39	Negative	Negative	Negative
310	28.8	106.7	13.4
311	4.9	15.5	1
312	21.3	51.7	9.9
313	3.2	6.9	1.3
314	2.7	6.5	1.5
315	2.6	8	1.6
316	21.9	65.9	18.9
317	48.5	143.1	37.6
318	48.5	185.4	37.3
319	Negative	Negative	Negative
320	38.3	109.1	29.2