Table 10.

TSH 2.5^th and 97.5^th percentiles for each trimester in healthy women using the Roche Cobas, E170 and Modular. Study details in Table 9.

Study	TSH mIU/L						FT4 pmol/L
	First		Second		Third		First		Second		Third
	2.5th	97.5th	2.5th	97.5th	2.5th	97.5th	2.5th	97.5th	2.5th	97.5th	2.5th	97.5th
R1	0.10	4.34					12.3	20.9
R2	0.33	4.59	0.35	4.10	0.21	3.15	12.1	19.6	9.6	17.0	8.4	15.6
R3	0.20	3.00	0.30	3.10	0.60	3.30	12.1	18.7	9.9	16.7	8.6	14.9
R4	0.07	3.45					12.4	21.0
R5	0.02	3.65	0.36	3.46	0.44	5.04	11.9	21.5	9.5	12.3	9.3	17.1
R6	0.25	3.81					11.5	18.6
R7	0.05	5.17	0.21	6.00	0.25	5.11	12.9	22.4	10.2	17.6	9.6	16.0
Mean	0.15	4.00	0.31	4.17	0.38	4.15	12.2	20.4	9.8	15.9	9.0	15.9
SD	0.12	0.74	0.07	1.29	0.18	1.07	0.43	1.44	0.31	2.44	0.55	0.92