Good morning. I'm hoping someone might be able to tell me whether TPO antibodies can fluctuate so wildly that tests just 14 weeks apart can show a patient ( me) to be positive then negative? As the ranges are different ( different labs) they may not help much but here they are:
1/9/15: Ak g. Thyreoperoxidase (< 34 U/ml) * 165
14/12/15 ac. anti-TPO (< 5.6 Ul/ml) < 3.0
Would testing blood that had been stored for 7 days ( and more) affect the results? My daft doctor phoned the lab to ask for this 'extra' test to be done when I got angry with him. He phoned 7 days after my blood was first taken and the testing was done 10 days after my blood was first taken. I am waiting to hear from a lab tech I happen to know how long the labs usually keep samples but would there be some degradation? If blood had been frozen, unfrozen and then frozen and unfrozen again? I'm not a phlebotomist....anyone?
I have to say I felt lousy when the first set of blood was taken ( and hashimotos also confirmed with an ultrasound). I feel much less lousy in the breathing/throat department at the moment.