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. Author manuscript; available in PMC: 2014 Jan 21.
Published in final edited form as: Contrib Nephrol. 2013 May 3;180:138–148. doi: 10.1159/000346793

Fig. 3.

Fig. 3

Least-squares fit linear function and 95% CIs. The relationship has an r2 of 0.72 and a p < 0.0001 for prediction of phosphate from the spectrographic response by the function phosphate (mg/dl) = 5.03 MSR + 4.92. Thus, the median mass spectrographic value for saliva of 1.0 would be 9.95 mg/dl.