Key tests weren't done at key times. No matter..ergo no proof, and quite possibly no proof even IF at a key time! Cancers 'hatch' and then incubate for 5-10 years before they can be 'found'. In my case? I was very, very lucky in that a 'lump' was found by the docs...honestly, that lump I never felt from initial diagnosis to surgery! My neuropathy was so bad, I simply could not "feel it"...EVER.
And that was with a fairly complete family history about cancers in my family from both sides [but alas, not of this kind].... Docs ignored that from the 'get go'? UNTIL I got the cancer diagnosis. Then? Too late. And that's often the outcome.
I suggest that you get one of the better neurologists or rheumatologists do that blood work? Some of my work ups were sent to Athena, and others to Mayo..[with that? Be alert to insurance mess ups...once you get an insurance rejection? Call your main insurance customer service and ask for a 'special case' manager.... as what you and they are going to have to deal with is well? Complicated. Let the insurance company work it out. Save your blood pressure issues for other things.
In the meantime? GET DIAGNOSED! READ the Stickies and LEARN about diagnostics and Don't GIVE UP!
Trickier still? Tho, is once you've done your own dectective work? You still have to do a 'sell job' to get the DOCS do their Dect. work! Don't go in and TELL THEM WHAT TO DO! Sell them about it? Learn the lingo, and the KEY symptoms that are YOUR best leads to a diagnosis...let THEM run and think it's THEIR IDEA. Hey, honey gets more flies than vinegar?
In the meantime?

's again! - j