Transient variation in anti-Müllerian hormone concentrations with repeat testing in a fertility clinic setting

Serum AMH in younger patients tends to fluctuate without a substantial decline over time. In older patients, values in samples taken within 6-12 months tend to fluctuate in either direction, but declines are more likely over longer time frames. This study demonstrates that a small proportion of patients will have transiently depressed AMH concentrations, but it is possible for concentrations to recover in some cases.