When ordering therapeutic phlebotomy you'll be asked to specify volume drawn (500mL is the default), weekly/biweekly/monthly draws, for a 12 month period. After 12 months a new prescription is required. According to an org specializing in blood iron disorders, the hemoglobin cutoff below which you should not draw is 12.5. The normal HGB range is 12-16 ish.
( notes tapped April 2013 for black bookCollapse )

GENETIC TESTING COULD PREVENT ADVERSE DRUG EFFECTS
more than 50% of pts have variations in 8-10 liver enzymes that affect drug metabolism
Mayo Clinic psychiatry and psychology dept has used genetic testing x2yrs
other clinics and departments are catching on
varying enzyme levels affect how long drug stays in system, how much it builds up with dosing
or how much levels dip between doses
pts who are unresponsive to their meds, or have bad reactions to meds, will be interested in this
( notes and websitesCollapse )

transferrin saturation = (serum Fe/TIBC) x 100. (normal is 20-50%)
( lecture notesCollapse )

Free radical = a solitary electron in a shell on an atom, looking for a partner. Very reactive, and can steal partners from other atoms and injure cells.
( on free radicals, antioxidants and detoxingCollapse )