Lipoprotein (a)
Lipoprotein (a), or Lp(a), is a type of LDL cholesterol. Your Lp(a) level is determined by your genes and isn't generally affected by lifestyle.
High levels of Lp(a) may be a sign of increased risk of heart disease, though it's not clear how much risk. Your doctor might order an Lp(a) test if you already have atherosclerosis or heart disease but appear to have otherwise normal cholesterol levels.
Lp(a) is often tested if you have a family history of early-onset heart disease or sudden death. It should also be tested if your LDL cholesterol doesn't respond well to drug treatment.
Natriuretic peptides
Brain natriuretic peptide, also called B-type natriuretic peptide (BNP), is a protein that your heart and blood vessels produce. BNP helps your body eliminate fluids, relaxes blood vessels and funnels sodium into your urine.
When your heart is damaged, your body secretes high levels of BNP into your bloodstream to try to ease the strain on your heart. BNP levels may also rise if you have new or increasing chest pain (unstable angina) or after a heart attack.
A high level of BNP alone isn't enough to diagnose a heart problem. Your doctor will also consider your risk factors and other blood test results.
http://www.mayoclinic.com/health/heart-disease/HB00016
High levels of Lp(a) may be a sign of increased risk of heart disease, though it's not clear how much risk. Your doctor might order an Lp(a) test if you already have atherosclerosis or heart disease but appear to have otherwise normal cholesterol levels.
Lp(a) is often tested if you have a family history of early-onset heart disease or sudden death. It should also be tested if your LDL cholesterol doesn't respond well to drug treatment.
Natriuretic peptides
Brain natriuretic peptide, also called B-type natriuretic peptide (BNP), is a protein that your heart and blood vessels produce. BNP helps your body eliminate fluids, relaxes blood vessels and funnels sodium into your urine.
When your heart is damaged, your body secretes high levels of BNP into your bloodstream to try to ease the strain on your heart. BNP levels may also rise if you have new or increasing chest pain (unstable angina) or after a heart attack.
A high level of BNP alone isn't enough to diagnose a heart problem. Your doctor will also consider your risk factors and other blood test results.
http://www.mayoclinic.com/health/heart-disease/HB00016
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