LC-MS-MS Measurements of Urinary Creatinine and the Application of Creatinine Normalization Technique on Cotinine in Smokers’ 24 Hour Urine

Figure 5

The scatter matrix plot of 24 h urinary cotinine unadjusted (a) and adjusted (b) from smokers with 8 mg, 10 mg, and 13 mg tar yield cigarette.

(a)

(b)