drug monitoring

Question 1

monitoring when starting statin

Answer 1

LFTs

Question 2

lithium monitoring

Answer 2

Sampling time for lithium is 12 hours after the last dose

normal reference range is 0.4-0.8 and toxic effects are likely to manifest at serum concentrations above 1.5

monitor weekly then once concentrations are stable, 3 monthly

sodium depletion can increase the risk of lithium toxicity