Keystone strategy

Chen LH, Keystone JS. New strategies for the prevention of malaria in travelers. Infect Dis Clin North Am 2005 19 185-210. 

Some of the most relevant procedures for the analysis of K-vitamers are brought together in Table 5. It should be clear that again LC is the technique of choice, as this technique is applied both to the sample cleanup and to the analytical measurement of vitamin Ki(20) in different matrices. As with all modern analytical programs, a keystone for success is a sound quality control and assessment strategy, which should always include the exchange of samples between different analytical laboratories and the use of round robin external quality assurance schemes wherever possible. 

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