Analyte detection apparatus and method of detecting an analyte

A method of detecting an analyte, the method comprising:

• irradiating a sample with optical radiation from a radiation source;
• receiving an optical Raman spectrum of radiation transmitted back by the sample in response to the received radiation from the radiation source, the optical Raman spectrum including one or more parts of significance to an analyte to be detected and one or more parts not of significance to an analyte to be detected, and
• selectively coupling different parts of the received Raman spectrum to different analysis devices wherein the different analysis devices include at least one analysis device which has resolution and/or signal to noise ratio for detecting a part the spectrum of significance to the analyte to be detected and at least one second type of analysis device which provides lower resolution and lower signal-to-noise ratio, for detecting a part of the spectrum not of significance to the analyte to be detected.

A method according to claim11, further comprising determining the concentration of an analyte.