Table 4
z-Score of tr ienzyme extraction-L. casei assay for breakfast cereal test sample in the FAPAS Proficiency Test 2196

Test sample	Folate content (μg/100 g)		z-Score
	Certified value1)	Analytical value2)
	Breakfast cereal	151		139.927	-0.5

The certified folate value of breakfast cereal was provided by NIST based on analytical results of 16 laboratories participated in the FAPAS (Food Analysis Performance Assessment Scheme) proficiency test 2196.
The analytical value was obtained from trienzyme extraction-L. casei assay for folate of breakfast cereal.