There certainly are opaque reasons for plummet from 28 to under 8... The test accuracy rate seems a good alternative to invasive tests for those not in high risk population. Competitors and vested interests in the status quo of highly invasive tests may have been factor in "alternative" versus "recommended" decision by the review agency. But seems like big financial players were all ready to prey on that outcome as cover to push prices down hugely "overnight"
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