Calcium Determinations Cal-Lactate & Lemon-C: (LF) UpH > 6.4 TpH > 13.2 Cal II & Nature-C: (LF) UpH < 6.2 SpH < 6.4 TpH < 12.8 Cal-Gluconate & C-Complex: (DR) UpH-SpH spread 10+ points