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Table 3 Serial dilution test of 21 year old female with very high TSH

From: A single bolus of high dose levothyroxine (L-T4) as a test in cases of suspected poor compliance to L-T4 therapy

Date TSH (μIU/ml) Dilution 4× Dilution 8× Dilution 16× Dilution 32×
Day 0 >100 198.76 (4 × 48.94) 199.44 (8 × 24.93) 209.8 221.12
Recovery: (16 × 13.11) (32 × 6.91)
100.3 % Recovery: Recovery:
(199.44 × 100 %/198.76) 105.5 % 111.2 %