<prompt> Ketone body that cannot be detected by Rotheras test:AcetoacetateAcetoneBeta hydroxy butyrateAll the above can be detected  <response>: Rotheras test can only detect acetoacetate and acetone, and not beta-hydroxy butyrate. Rotheras test: Ketone bodies react with sodium nitroprusside in the presence of NH3 to form a purple colored ring. Positive test indicate Acetoacetate and Acetone. No specific test available for beta-hydroxy butyrate. So, it is first oxidised to Acetoacetate, then Rotheras test is performed. 