Aspect | Family Method | Formulation Method | Feeding Trial Method |
Cost | Moderate, combining analysis with feeding trial for lead product | Low, based on nutrient analysis only | High, requiring live animal trials |
Time | Moderate, depends on feeding trial for lead product | Fastest, does not require live testing | Slow, as feeding trials take weeks to months |
Nutrient Bioavailability | Assumed from lead product’s feeding trial | Not tested, relies on ingredient calculations | Directly tested through live trials |
Use of Feeding Trial | Required only for lead product, not each family member | Not required | Required for each tested product |