Does detective Conan ever get taken seriously as an actual detective, instead of being seen as a mere kid by the main characters? Instead of hiding behind his subtle hints he gives and his voice changer to manipulate someone else as the case solver. If so, what episode does he get taken seriously?
He doesn't blow his cover, but regular characters pay attention to him down the line. This includes police inspectors. Though, you have to watch a couple of hundred episodes more. Around ep900 this becomes more prominent, but he's still formally just a kid and these kind of moments are more comic relief than anything else.
Of course, he exposes his identity to more and more characters, too, and those take him seriously.