Additionally,evidence for a serial increase or decrease ≥20% is required if the initial value is elevated
There is a paucity of guidelines for establishment of reinfarction during the acute infarct period on the basis of troponin measurements. References suggest that an increase of >20% of previous troponin levels or an absolute increase of high-sensitivity cardiac troponin T values (e.g., >7 ng/L over 2 hours) may indicate reinfarction