I received my PCR results under the new Quest IS. It read 27.432%. It did not reference the log reduction relative to my previous PCR. I want to walk through some deductive reasoning here to determine if this rational makes sense where I am at relative to my diagnosis and first PCR at 3 months.
My last PCR(at 3 month dx) had a small log reduction of -0.026
It states on the new Quest lab report that at 10% reading is equal("although not precisely equivalent") to 1 log reduction, 1% is equal to a 2 log reduction and 0.1% is equivalent to a 3 log reduction. If i compute the delta(log) between 27.432% and 10% then a 1 log reduction is equivalent to needing to reduce my readings by 0.438 log reduction.
Therefore can I conclude that to date from Diagnosis that I have achieved 1 - .0438 = -0.56 reduction? My Oncs goal at 3 months was a 1 log reduction which from my calculations should they make sense was -0.56 in a 5 month period.
I asked the Onc what the new reduction was and he only said it was not a 1 log reduction but did not have paperwork in front of him as we agreed that if I did not make the reduction he would change medicine. At 3 months he wanted to change the medicine and I said lets give it another month. He was not real happy with me on this but agreed to do it
He wants to change me from Gleevec to Sprycel because of this slow response. I have absolutely no side effects from Gleevecs and hope I do as well on Sprycel. I asked if it was because of mutation or I was starting from such a High WBC of 258k. He indicated he was not sure.
Your opinions on the calculations/deductive reasoning above would be appreciated.