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Table 2 Results of TSH dilution test performed on a day prior to LT4 absorption test

From: Adequate timing and constant supervision are the keys for successful implementation of levothyroxine or levothyroxine/paracetamol absorption test

TSH sample dilutionTSH [μIU/ml]TSH [μIU/ml] after recalculation
No dilution289.3289.3
1:472.8291.2
1:1619.7315.2
1.3210.1323.2