CARDIOVASCULAR

Question 1

Cardiac-specific troponin I

Answer 1

Normal values: ≤0.02 ng/mL (≤0.02 mcg/L)
Critical cutoff: ≥0.3 ng/mL (≥0.3 mcg/L)

Question 2

cardiac specific Troponin T

Answer 2

Normal values:<0.1 ng/mL (<0.1 mcg/L)
Critical cutoff: ≥0.1 ng/mL (≥0.1 mcg/L)

Question 3

CK-MB normal levels

Answer 3

≤6 ng/mL (≤6 mcg/L)

Question 4

Diagnostic cutoff for B-natriuretic peptide

Answer 4

Normal <100 pg/mL (100 ng/L)
Critical cutoff: >500 pg/mL (>500 ng/L)

Question 5

N-terminal Pro-BNP diagnostic cutoff

Answer 5

Normal: <300 pg/mL (<300 ng/L)

Critical cutoff:
>450 pg/mL in patients <50 years
>900 pg/mL in patients 50–75 years of age;
>1800 pg/mL in patients >75 years of age