Parotid Saliva-Serum Ratios of Ca 17 in Man Following Intravenous Administration of the Isotope. ∗

Abstract

Summary

1. Ca⁴⁷ was administered intravenously to 10 normal adults, and serum and parotid salivas were obtained at intervals during a 24-hour period. 2. The parotid saliva-serum specific ratio was near unity one hour after administration of the isotope to the 5 males. 3. The females appeared to “concentrate” Ca⁴⁷ in the parotid saliva particularly during the first 2 hours after intravenous administration of Ca⁴⁷. All succeeding ratios were no more than 10% greater than unity.