Provided are a measurement apparatus, a measurement instrument, a measurement system, a server, an analysis method, a storage medium and a data structure that easily enable good acoustic characteristics while improving the accuracy of body temperature detection. The measurement apparatus includes a metal tube having a first end and a second end; a measurement unit which is arranged at the first end 13a side of the metal tube and is capable of measuring electromagnetic radiation incident from the second end of the metal tube; a sound output unit configured to output sound; and a first path and a second path to the first end of the metal tube for sound outputted from the sound output unit, wherein the first path and the second path have different lengths.