I can totally understand the very frustrating position you are in. My mother is 72 yo widow and she did all the tests as well including sputum.Agree, my mother has been doing different medical tests for past 6 months, she is 81 yo, mild hypertension, my impression they are trying to fit her to astronauts ...we ve done blood tests, chest X-ray x2, sputum... yesterday email arrived asking to contact panel physician for additional test required... I am so tired with all of that...