If R10 tests come back ALL NEGATIVE: Bart-vasculopathy survives honest disconfirmation → upgrade 97% → 99%+. The model has earned the confidence.
If any R10 test fires POSITIVE: Model owes a re-write. Specific triggers:
- High-titer ANA with ACA / Scl-70 / SSA pattern → Bart drops 97% → 30%
- C4a >20,000 + MSH <35 → Bart drops 97% → 40%
- 2-week CSM produces 3-part-BBB-signature improvement → Bart's necessity claim weakened
- Three negative Bart PCR/FISH draws (Galaxy + ArminLabs + ddPCR) → "indolent never-seroconverting Bart" becomes unfalsifiable