The commonest method for fluoride analysis is the fluorideion-specific electrode. Other methods for fluoride analysis include volumetric, colorimetric, gas chromatographic, ion chromatography and nondestructive nuclear methods. The monofluorophosphate (MFP) ion is analyzed directly by ion exchange, ion chromatography or paper chromatography. The MFP ion is also determined by analysis before and after hydrolysis of the fluoride ion. Only a limited number of reports on 18F- and 32P-labeled MFP have been made.