Skip to main content
Fig. 1 | Nutrition Journal

Fig. 1

From: Can serum isotope levels accurately measure intestinal calcium absorption compared to gold-standard methods?

Fig. 1

One Hour Serum Isotope Estimates Compared to 24-h Urine Fractional Calcium Absorption (FCA) Values. One-hour serum estimates correlated with 24-h urine FCA in Cohort 1 (ρ = 0.56, p = 0.011, (a), but introduced significant bias in FCA estimates (b). In Cohort 2, we found no correlation between 1-h serum estimates of FCA and 24-h urine fractional calcium absorption (ρ = 0.40, p = 0.286, (c). Thus, testing of bias via Bland-Altman analysis (d) was not relevant

Back to article page