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Standard Interpretation

Standard: 2009 TNI
Section: V2M2


A laboratory in our program has requested accreditation to measure analytes in biological tissue. The question is "If biological tissues are not listed as a matrix for the current NELAC Fields of Proficiency Testing, are proficiency tests of solid and chemical materials acceptable to demonstrate proficiency for testing biological testing?" Thank you for your assistance.


(Proficiency Testing Expert Committee and NELAP AC, 9-23-15)

Biological tissues are not a matrix in the TNI FoPT tables, as such there would be no proficiency testing requirements for this matrix.