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Age-Specific Normal Reference Range for Serum Anti-Müllerian Hormone in Healthy Chinese Han Women: A nationwide
Xiaofang Du1, Ting Ding1, Hanwang Zhang2
1Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Background:
The increasing use of anti-Müllerian hormone (AMH) in clinic has raised concerns regarding the reliable reference range for this test. However, the reference range for AMH in normal Chinese female population has not been established. Furthermore, relationship between AMH and other clinical markers such as body mass index (BMI) and antral follicle counts (AFCs) and other sex-related hormones have not been examined in normal population-based women.
Objective:
We aimed to determine the age-specific reference range for serum AMH in healthy Chinese women throughout reproductive age to menopause and to estimate relationship between AMH and other clinical markers in healthy women.
Study Design:
In this multicenter and nationwide study, advertisements were used to recruit 2055 women, aged 20 to 55 years, from 6 different regions in China; 1590 (77.37%) women met the inclusion criteria for the reference range population. We measured the baseline serum AMH levels using new Beckman Coulter Gen II assay. Serum concentration of follicle-stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2), testosterone (T), prolactin (PRL), progesterone (PRG), and AFCs were also determined in the follicular phase.
Main Outcome Measures:
The AMH-Age nomogram and AMH levels of different age-groups and the relationship between AMH and other clinical markers.
Results:
Serum AMH concentrations declined progressively with age. A quadratic model defined as log (AMH) = (-1.970 + 0.296 × Age - 0.006 × Age(2)) fitted best the decline of AMH with age. The median AMH levels were 6.23, 5.65, 4.55, 3.74, 2.78, and 1.09 ng/mL for the 20 ≤ age < 25, 25 ≤ age < 30, 30 ≤ age < 33, 33 ≤ age < 37, 37 ≤ age < 40, and 40 ≤ age < 55 groups, respectively. The 5th to 95th percentiles of the AMH levels, as the reference range, were 2.06 to 12.66, 1.77 to 13.83, 1.48 to 11.45, 0.87 to 9.76, 0.56 to 9.49, and 0.08 to 5.70 ng/mL for each age-group. The AMH levels were positively correlated with AFCs and T, LH, PRL and PRG levels and negatively correlated with BMI and FSH levels and were not significantly correlated with E2 levels. The relationship between AMH and other variables remain unchanged except for PRL, which was not significantly correlated with AMH levels after controlling for both age and BMI.
Conclusions:
This study determined the normal reference ranges for serum AMH levels in a large population-based sample of healthy Chinese women.
