1. Comparison of salivary versus serum testosterone levels in postmenopausal women receiving transdermal testosterone supplementation versus placebo
- Author
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James K. Liu, Rebecca Flyckt, Sheryl A. Kingsberg, Akshay Buch, Kathryn Wekselman, and Heidi Frasure
- Subjects
medicine.medical_specialty ,Hormone Replacement Therapy ,medicine.drug_class ,medicine.medical_treatment ,Administration, Cutaneous ,Placebo ,Placebos ,Double-Blind Method ,Sex Hormone-Binding Globulin ,Internal medicine ,Humans ,Medicine ,Testosterone ,Sexual Dysfunctions, Psychological ,Saliva ,Serum Albumin ,Transdermal ,business.industry ,Obstetrics and Gynecology ,Hypoactive sexual desire disorder ,medicine.disease ,Androgen ,Postmenopause ,Menopause ,Endocrinology ,Concomitant ,Female ,Hormone therapy ,business - Abstract
Objective: Clinical assessment of androgen action and its correlation to testosterone levels in women has been challenging. The current gold standard for measuring biologically active testosterone (T) is serum free T by equilibrium dialysis. Alternative methods are desirable due to the cost, complexity, and limited availability of the equilibrium dialysis method. Salivary testing has been proposed as a possible substitute for serum testing. This study compared salivary versus serum measurements of total T (TT), bioavailable T (BT; consisting of free T [FT] and albumin-bound T), and FT from samples collected simultaneously in women who were either receiving transdermal T patch supplementation (300 f .Lg/d) or a placebo patch. Methods: Naturally and surgically postmenopausal women receiving concomitant hormone therapy were recruited to participate in a 24- to 52-week phase III trial of a 300 j i g/day transdermal T patch for the treatment of hypoactive sexual desire disorder. Results: Initial analysis demonstrated high correlations between TT, BT, and FT levels (r = 0.776-0.855). However, there was no correlation with salivary T levels for any of the serum T subtypes (r = 0.170-0.261). After log transformation, salivary T correlated modestly with BT (r = 0.436, P < 0.001), FT (r = 0.452, P < 0.001), and TT (r = 0.438, P < 0.001). Conclusions: Although salivary testing of T concentrations is an appealing alternative because it is inexpensive and noninvasive, our results do not support the routine use of salivary T levels in postmenopausal women.
- Published
- 2009
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