Do NOT use gel tubes for this analysis
Chilled (2 - 8 degrees Celsius)
If overnight - Chilled (2 - 8 degrees Celsius)
630 – 2100 nmol/L
The probability of side affects increases when the trough plasma concentration exceeds 2400 nmol/L
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Flecainide is almost completely absorbed from the gastrointestinal tract following oral administration with peak plasma concentrations occuring after about three hours. Flecainide is metabolised by the liver but about 40% of a dose is excreted unchanged. Metabolites have little or no antiarrhythmic effect. The average elimination half life is 11 hours and flecainide may accumulate in patients with renal failure. Monitoring of concentrations in such patients is therefore important.