Salute!
A blood test every flight or two? No good.
There are personal monitoring systems that are not that expensive and can provide warning ahead of time, versus telling the Doc that you and SLF were exposed to bad things on that flight last night when something smelled bad. I am not talking about being wired up ;like for an EKG that most of us here have done dozens of times.
I wear a ring at altitudes above 5,000 feet due to my lung problem and mild anemia. It vibrates like crazy at a certain oxygen saturation and/or pulse rates. Costs less than $200. Then we should consider basic aircraft detection systems besides the simple cabin altitude stuff we already have. Oh well.
Remember, besides histoxic anemia we can have hypemic hypoxia. Carbon monoxide detection is cheap, and if we are using bypass for the cabin pressure, it is a player.
Glad to see more interest in our breathing systems nowadays.
Gums sends...