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Choose one answer

1. AIncreased renal clearance in pregnancy lowers plasma levels, so checks are needed more frequently
2. BMonitoring should switch from plasma levels to urine lithium concentration
3. CChecks can reasonably become less frequent, since gestation is thought to stabilise plasma lithium levels
4. DChecks can stop entirely once the first-trimester teratogenic risk period has fully passed
5. EMonitoring should be replaced by monthly renal ultrasound scans instead