✨Contradictory test results - AMH and FSH

El
I don't understand this .... my amh is normal (2.5) but my FSH ranges from 6 to 10 even 14 once! How can that be? They test the same thing but they contradict each other! Which test should I trust? Anyone knows? 
Thanks! 
Amh -  ANTI-MULLERIAN HORMONE (AMH)
FSH - Folicule  stimulating hormone