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Supplemental Table 2: Comparison of CT data (IL, LIA and IRMA) with PCT results (Kryptor): CT levels were below detection limit and 85.5 ng/L (LIA) in non MTC-patients (n=437); between detection limit and 107 ng/L (LIA) during pentagastrin (PG) testing in patients with chronic kidney disease (n=13); and between 18.2 and 10300 ng/L (LIA) in patients with known MTC (n=10). All three sampling time points of the PG test were used for the calculations. **p<0.01; ***p<0.001