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Analyzing the Pearson’s correlation of DHBA and DHPPA urinary concentrations from various purification protocols to those from the most effective purification method. The data compares protocols A, B, and D with protocol C.
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Supplemental Data Fig. 2: Pearson’s correlationUrinary concentrations of DHBA and DHPPA (n=33) from the protocols A, B and D were correlated with the concentrations from the protocol C (most purification). For DHBA:Protocol A (straight from hydrolysis): r2 = 0.9243 (y =1.063x + 1.423)Protocol B (no extraction):r2 = 0.9699 (y =1.139x + 0.906)Protocol D (direct urine dilution):r2 = 0.8153 (y =1.240x + 0.782) For DHPPA:Protocol A (straight from hydrolysis): r2 = 0.9291 (y =1.074x + 0.809)Protocol B (no extraction):r2 = 0.9854 (y =1.063x + 0.393)Protocol D (direct urine dilution):r2 = 0.8371 (y =0.741x – 3.562) DHBA X___protocol A □...... protocol B Δ__ protocol D DHPPA X___protocol A □...... protocol B Δ__ protocol D