Seriously? You must have some major health issues if you need to test for that lot every 6 months. And fair enough if you really do have genuine concerns about your health, but honestly why on earth would you want to check all these things?
For a start O2 saturations will only give you the smallest snapshot of that particular moment, they don't give you any idea about your overall health or what happened 2 minutes ago or 2 minutes into the future.
Allergens and gluten sensitivity - why recheck every 6 months? Paranoia?
Sorry but I can't see that any of these are necessary mostly they are totally OTT. Why not trust your body to let you know when things are out of whack? Sure get things checked once, but not point making sure your gluten tolerance is still the same every 6 months.