Hello fellow PCers,

I've been wanting to have answers to this for a long time now.
2 years ago I took an SSRI for my depression. My serotonin level in my blood was low before treatment. (blood test)
After my treatment, it was close to 0, even lower than before. (blood got tested again)
what could that have meant ? and it could that have something to do with my severe digestive problems ?