Table 1:

Hormone intra and inter-assay Coefficients of Variability

Hormone	Intra-assay C.V.						Inter-assay C.V.
17β estradiol (pg/mL)	0.23	0.50	0.74	35	151	405	0.29	0.50	0.77	32	140	382
Variation (%)	11.8	7.3	6.0	1.6	1.5	1.4	10.8	8.5	6.9	5.1	4.6	4.8
Estrone (pg.mL)	0.30	0.50	0.84	32	142	389	0.25	0.51	0.85	30	131	355
Variation (%)	17.8	7.5	6.1	2.5	1.7	1.2	12.0	9.5	7.9	7.4	7.1	6.6
Follicle Stimulating Hormone (mIU/mL)	8.6	47.1					6.5	16.7	58.0
Variation (%)	32.	2.8					3.6	3.2	4.7
Luteinizing Hormone (mIU/mL)	1.2	38.5					1.4	15.6	48.8
Variation (%)	4.3	4.0					9.3	6.0	6.0
Testosterone, high sensitivity (ng/dL)	0.65	4.3	48	118	832		0.69	4.3	45	117	841
Variation (%)	7.4	6.1	9.0	2.3	0.9		8.9	6.9	4.0	3.6	3.5

Reused with permission from: Kling JM, Dowling NM, Bimonte-Nelson HA, et al. Impact of Menopausal Hormone Formulations on Pituitary-Ovarian Regulatory Feedback. Am J Physiol Regul Integr Comp Physiol. 2019;doi: 10.1152/ajpregu.00234.2019

C.V. = coefficient of variability