★★★★★
I was having attacks of gout and discovered my ferritin levels were around 650. I started giving blood like a madman every 2 months for 2 years getting down to 40.
I am gout free for years now, weening off completely from allopurinol over a year ago.
I worked with my doctor on this for the last 5 years and she is actually amazed at my blood work. She is adding iron level tests for all her male patients.
You want your ferritin levels in double digits, probably best 40-50, but talk to your doctor.