PTX3 and congestive heart failure: The plasma level of PTX3 in control subjects (37 males, 27 females, mean age: 76 ± 9 years) was 2.58 ± 0.53 ng/mL, but the corresponding value was 3.42 ± 0.88 ng/mL in the CHF patients (220 males, 157 females, mean age: 77 ± 9 years).