Plasma and Red Cell Reference Intervals of 5-Methyltetrahydrofolate of Healthy Adults in Whom Biochemical Functional Deficiencies of Folate and Vitamin B₁₂ Had Been Excluded

Table 2

Reference intervals for 5-MTHF with 90% confidence intervals for lower and upper 95% reference limits.

Analyte	Reference intervals	Lower reference limit	Upper reference limit
Plasma 5-MTHF (nmol/L)	6.6–39.9	5.3–8.9	36.9–41.7
Redcell 5-MTHF (nmol/L)	223–1040	206–291	930–1110
Whole blood 5-MTHF (nmol/L)	245–1102	224–311	969–1184