I just wondered if anyone knows much about AMH levels? I'm a healthy volunteer in a fertility study where I have my AMH levels measured every 6 months. I've had 2 lots of results so far and they've both been in the normal range so I didn't really take much notice. I've just come across the two letters and realised that in Dec 2010 my level was 23.8 and in June 2011 it had dropped to 16. Is this normal? It seems like a big drop in just 6 months. I had my third test a couple of weeks ago so now I'm worried it's going to drop again. I'm 30 and we've just started trying for our first. I suffer from anxiety and depression so already quite stressed about the whole TTC.