Males had significantly higher median hs-cTnT values than females (16 [8–34] vs. 9 [6–22] ng/L, p < 0.001), African Americans had a significantly lower median value than Caucasians (10 [6–24] vs. 15 [6–29] ng/L, p < 0.001), and those with atrial fibrillation (27 [16–48] vs. 9 [6–19] ng/L, p < 0.001) and heart failure (28 [14–48] vs. 8 [6–15] ng/L, p < 0.001) had higher median values than those without. The gene discussed is TNNT2; the disease is atrial fibrillation.