The tests you’re using sound quite involved. In the UK at least, there are simple and cheap blood tests you can order for vit D and iron e.g. here and here respectively, which I thought might be useful for people to know. I don’t know how reliable they are, though. There look to be home vit B12 tests that are more expensive and I’ve not used one myself.
The tests you’re using sound quite involved. In the UK at least, there are simple and cheap blood tests you can order for vit D and iron e.g. here and here respectively, which I thought might be useful for people to know. I don’t know how reliable they are, though. There look to be home vit B12 tests that are more expensive and I’ve not used one myself.