You’re dressing speculation up as regulatory certainty — and it doesn’t hold.
FDA absolutely compares like to like — which is why administered dose, final viscosity, containment, and decay-corrected activity at time of injection are what matter. Not shipment geography, not your hypotheticals.
• Zr-90/Y-90 ratios are controlled specifications, not wild variables. FDA evaluates them at administration, not at some imagined worst-case shipping snapshot.
• Higher starting activity doesn’t = different product if final rheology and delivered dose are within validated bounds. That’s basic radiopharmaceutical practice.
• Viscosity arguments are a red herring. If viscosity were outside spec, FDA would terminate the pathway — not return applications with correctable deficiencies.
• Encapsulated Y-90 avoids viscosity effects because it creates a bolus, not because it’s “better science.” That’s a tradeoff, not an advantage — and physicists have been clear about the dose-uniformity consequences.
As for India:
You keep asserting a “stop” that regulators themselves have not declared. Silence doesn’t = rejection, and insinuations about motives don’t substitute for facts.
And the rabbit refrain?
Repeating “Occam says disaster” doesn’t make it evidence. If FDA believed the data demonstrated unsafe leakage or non-functionality, the program would be terminated — not iterated.
Bottom line:
You keep confusing regulatory iteration with scientific failure, and filling gaps with conjecture when you don’t have the record.
Same assumptions.
Same recycled claims.
Big swing — still a miss.