Measurements of AMH (Anti-Mullerian Hormone) can vary between methods but if you had tthe test at Manchester Fertility a level of 11.2 pmol/l is within the expected range for your age group.  AMH is a measure of ovarian reserve and is not the only indicator for conception. For further information you can read our blog on understanding your AMH levels.
https://www.manchesterfertility.com/blog/what-your-amh-levels-mean-understanding-and-interpreting-your-amh-test-result