A dual-tracer, stable-isotope method was used to measure the percentage of true calcium absorption, true calcium absorption rate, endogenous fecal calcium excretion rate, urinary calcium excretion rate, and calcium retention rate

2006

A dual-tracer, stable-isotope method was used to measure the percentage of true calcium absorption, true calcium absorption rate, endogenous fecal calcium excretion rate, urinary calcium excretion rate, and calcium retention rate

2006

- A dual-tracer, stable-isotope method was used to measure the percentage of true calcium absorption, true calcium absorption rate, endogenous fecal calcium excretion rate, urinary calcium excretion rate, and calcium retention rate
- The α value was higher in infants receiving human milk or HMF than in those receiving EPF-20/750 formula or in previously reported infants fed standard formula; those given EPF-24/940 formula had intermediate values
- In the crossover study, no significant differences were seen between formulas for α and for Va, Vf, or Vf per kilogram
- Vu per kilogram was significantly decreased in infants receiving the higher mineral formula
- Vf per kilogram was inversely related to birth weight
- We conclude that increasing formula mineral content does not ensure increased retention; careful monitoring of individual infants remains indicated