If you score 15 or more, this author says you should get tested. The test is $73 at Bio-Center Laboratory, and can be ordered with or without a doctor’s order:
I talked to my doctor and he ordered the kits (free for MD’s). I am now awaiting my results. I scored 35 of 36 on this questionnaire, so no matter how the lab test comes back, I know that I am feeling much better now that I am back on the Pyroluria supplements. There is a protocol in this book, and it’s a good one!
“Depression-Free, Naturally” by Joan Mathews Larson