(Adults) LIPID PROFILE, EXTENDED , SERUM (Spectrophotometry, Electrophoresis &Immunoturbidimetry) - Cholesterol, Total Triglycerides HDL Cholesterol LDL Cholesterol VLDL Cholesterol Non HDL Cholesterol Chylomicrons - Cholesterol: HDL Ratio mg/dL mg/dL mg/dL mg/dL mg/dL mg/dL <200 <150 - 3.30-4.40 <100 <30 <130 Nil Apolipoproteins B / A 1 Ratio Apo A1 105-205 ( Females) 105-175 ( Males) 55-130 ( Females) 60-140 ( Males) (0.35-0.98) mg/dL Apo B mg/dL Apo B / Apo A1 Ratio Lipoprotein (a); Lp(a) mg/dL < 30 Cardio CRP mg/L <1.00 Lipoprotein electrophoresis HDL LDL VLDL Chylomicrons % % % - 15.10-39.90 42.30-69.50 2.00-31.20 Nil HDL Cholesterol >50 >40 Gender Females Males Interpretation NATIONAL LIPID ASSOCIATION RECOMMENDATIONS (NLA-2014) Optimal TOTAL CHOLESTEROL in mg/dL TRIGLYCERIDE in mg/dL LDL CHOLESTEROL in mg/dL NON HDL CHOLESTEROL in mg/dL <200 <150 <100 <130 Above Optimal Borderline High High Very High REMARKS Low risk Average risk Moderate risk High risk 200-239 >=240 - CHOLESTEROL : HDL RATIO 3.3-4.4 4.5-7.1 7.2-11.0 >11.0 REMARKS Optimal Above Optimal Borderline High High Very High REMARKS Low risk Average risk Moderate risk High risk Cholesterol : HDL Ratio 3.3-4.4 4.5-7.1 7.2-11.0 >11.0 150-199 200-499 >=500 CARDIO CRP in (mg/L) <1.0 1.0-3.0 >3.0 TOTAL CHOLESTEROL in mg/dL <200 200-239 >=240 - 100-129 130-159 160-189 >=190 130 - 159 160 - 189 190 - 219 >=220 APO B in (mg/dL) Lp (a) in(mg/dL) <80 80-119 >=120 >=50 TRIGLYCERIDE in mg/dL LDL CHOLESTEROL in mg/dL <150 150-199 200-499 >=500 <100 100-129 130-159 160-189 >=190 Apo B / A1 Ratio 0.35-0.98 >0.98 Note: 1. Measurements in the same patient can show physiological& analytical variations. Three serial samples 1 week apart are recommended for Total Cholesterol, Triglycerides, HDL& LDL Cholesterol 2. As per NLA-2014 guidelines, all adults above the age of 20 years should be screened for lipid status. Selective screening of children above the age of 2 years with a family history of premature cardiovascular disease or those with at least one parent with high total cholesterol is recommended. 3. NLA-2014 identifies Non HDL Cholesterol(an indicator of all atherogenic lipoproteins such as LDL , VLDL, IDL, Lpa, Chylomicron remnants)along with LDL-cholesterol as co- primary target for cholesterol lowering therapy. Note that major risk factors can modify treatment goals for LDL &Non HDL. 4.Apolipoprotein B is an optional, secondary lipid target for treatment once LDL & Non HDL goals have been achieved 5. If initial cardio CRP>10mg/L, it should be disregarded & measured again when patient stabilizes. Avoid measurement during acute infection, chronic inflammatory disease, post menopausal hormone therapy 6. If initial cardio CRP<10mg/L – use average of two values (measured 2 or more weeks apart;intraindividual variation being >40%) to estimate risk Comments The NCEP ATP III guidelines established LDL-C& Non LDL-C treatment goals in 2004 since then use of lipid lowering drugs particularly statins has reduced Atherosclerotic Cardiovasular disease (ASCVD) morbidity and mortality; however significant residual risk for the events remains. This combined with the rising prevalence of obesity, which has shifted the risk profile of the population toward patients in whom LDL -C is less predictive of ASCVD events (metabolic syndrome, low HDL Choleterol, elevated triglycerides). NLA 2014, recommended for those at moderate risk (2 major ASCVD risk), additional testing for inflammatory, non-lipid and other lipid biomarkers may be considered for risk refinement. The presence of one or more secondary risk factor should prompt the clinician to consider drug therapy for patient whose atherogenic cholesterol level is higher than goal level Major risk factors for ASCVD Age ( men >=45; women >=55) Family history of premature CHD (CHD in a male first degree relative < 55 years / CHD in a female first degree relative < 65 years) Cigarette smoking Hypertension ( BP >= 140/90 or on antihypertensive medication) Low HDL Cholesterol ( <40 mg/dL in males and <50 mg/dL in females) Diabetes mellitus Pre-existing ASCVD Secondary risk indicators for risk refinement Coronary artery calcium (>300 A considered high risk) LDL-C >160mg/dl and/or Non HDL-C >190 mg/dL hsCRP>2.0mg/L Lp(a) > 50mg/dl Urine Albumin/Creatinine ratio>30mg/gCrt Cholesterol:There is a clear cut relationship between elevated serum cholesterol and myocardial infarction. At the tissue level, it plays a prominent part in atherosclerotic lesions. Triglycerides: Elevated levels are seen with overnight fast less than 12 hours, Non insulin dependent Diabetes mellitus, Obesity, Alcohol intake, Hyperlipidemias (specially Types I, IV & V; > 1000), Pancreatitis ( > 500), Gout, Pregnancy, Drugs like thiazide diuretics, anabolic steroids, cholestyramine, corticosteroids, amiodarone& interferon. HDL Cholesterol: It is a cardioprotective cholesterol ( good cholesterol). Patients with low levels of HDL are at increased risk for premature ASCVD and is used in risk factor counting and quantitative risk assessment.HDL cholesterol levels are inversely related to an increase in body fat, waist circumference, triglyceride, small dense LDL particles, insulin resistance, systemic inflammation & cigarette smoking. LDL and Non HDL Cholesterol:LDL-C has traditionally been the primary target of therapy, the NLA Expert Panel consensus view is that Non HDL-C is a better primary target for modification than LDL-C. Non HDL-C comprises the cholesterol carried by all potentially atherogenic particles, including LDL,IDL, VLDL, VLDL & Chylomicron remnants and Lp(a). Non HDL-C also simplifies the management of patients with high triglycerides as it incorporates triglyceride concentration indirectly. Apolipoprotein B: Each potentially atherogenic lipoprotein particlecontains one molecule of Apo B thus it is a direct indicator of number of circulating particles with atherogenic potential. Apo B is more powerful independent predictor of ASCVD than LDL Cholesterol. Apo B is a potential contributor to residual ASCVD risk because it may remain elevated in some individuals (especially those with elevated triglyceride and lower HDL cholesterol) who have attained there treatment goals for Non-HDL & LDL cholesterol. In NLA recommendation, 2014 Apo B is considered as an optional, secondary target for treatment Lipoprotein (a); Lp(a): Increased levels are usually familial showing an autosomal dominant pattern of inheritance and are associated with an increased risk of ASCVD, Cerebrovascular disease and Stroke. Generally the levels are not influenced by diet or common hyperlipidemicdrugs but can be lowered by Niacin (Vitamin B3), Exercise, Neomycin & Estrogen replacement therapy. Cardio CRP: Elevated CRP levels is a risk factor for ASCVD that is independent of patient’s LDL value. Cardio CRP is a strong indicator of future cardiovascular events. Patients with elevated CRP levels may have greater benefit in risk reduction with statin therapy than those with lower CRP levels independent of LDL cholesterol values. Usage Patients with two major risk factors for ASCVD Patients with hypertriglyceridemia/metabolic syndrome/abdominal obesity/insulin resistance Patients with normal lipid profile but low HDL Patients on Statin therapy who have achieved desirable LDL-C & non HDL-C goals Clinical evidence of non CHD atherosclerosis or DM Family h/o premature CHD especially patients with Familial combined Hyperlipidemia (Tg> 150 mg/dl & Apo B > 120 mg/dl) which is the most common cause of premature CHD Familial HYpercholeterolemia Recurrent ASCVD events Comment A variety of genetic conditions are associated with accumulation in plasma of specific class of lipoprotein particles. The critical first step in managing lipid disorder is to determine the class or classes of lipoprotein that are increased or decreased in a patient. Frederickson classification can be helpful in this regard. The hyperlipidemic status should be evaluated to determine if it is a primary lipoprotein disorder or secondary to metabolic disease. The diagnosis of primary hyperlipidemia is made after secondary causes have been ruled out. It is important to diagnose primary lipid disorder since the underlying etiology has significant effect on development of CHD, on response to drug therapy, and on the management of other family members. Type II b is the most commonly inherited lipid disorder, occurring in approximately 1 in 200 persons.Familial hypertriglyceridemia (FHTG) is a relatively common (1:500) autosomal dominant disorder of unknown etiology. It is important to consider & rule out secondary causes of hypertriglyceridemia (Obesity, Type 2 DM, Alcoholism, Renal failure, Cushing's syndrome etc.) before making the diagnosis of FHTG. FREDRICKSON CLASSIFICATION Type of Hyperlipoproteinemia Molecular defect Estimated incidence Lipoprotein elevated I Familial Chylomicronemia Syndrome Lipoprotien lipasedefici ency; Apo C II deficiency Mutation in LDL receptor, Apo B 100 1 in 1,000,000 Chylomicro ns 1 in 500 LDL II a Familial Hypercholesterolemia Cholester ol, Total (mg/dL) + to ++ 200-400 Triglyceride (mg/dL) Serum Appearance ++++ > 3000 Milky +++ 300-1000 Normal Clear II b Familial Combined Hyperlipidemia Unknown 1 in 200 LDL & VLDL ++ to +++ 280- 350 ++ 200-500 Clear to slightly turbid III Familial Dysbetalipoproteinemi a or Familial broadbetadisease Genetic variation in APO E 1 in 10,000 Chylomicro n and VLDL remnant (IDL) ++ to +++ 300- 500 ++ to +++ 200- 900 Clear to slightly turbid IV Familial hypertriglyceridemia Unknown 1 in 500 VLDL Usually <270 ++ 200-1000 Turbid 1 in 500 Chylomicro n & VLDL ++ to +++ <500 ++++ <3000 Milky V Familial hypertriglyceridemia Unknown (Children) LIPID PROFILE, EXTENDED , SERUM (Spectrophotometry, Electrophoresis &Immunoturbidimetry) - Cholesterol, Total Triglycerides HDL Cholesterol LDL Cholesterol VLDL Cholesterol Non HDL Cholesterol Chylomicrons Cholesterol: HDL Ratio - mg/dL mg/dL mg/dL mg/dL mg/dL mg/dL Nil - Apolipoproteins B / A 1 Ratio Apo A1 mg/dL Apo B mg/dL Apo B / Apo A1 Ratio Lipoprotein (a); Lp(a) <170 <150 40-60 <110 <30 mg/dL 3.30-4.40 105-205 ( Females) 105-175 ( Males) 55-130 ( Females) 60-140 ( Males) (0.35-0.98) < 30 Cardio CRP mg/L <1.0 Lipoprotein electrophoresis HDL LDL VLDL Chylomicrons % % % - 15.1-39.9 42.3-69.5 2.0-31.2 Nil REMARKS Optimal Borderline High High Very High REMARKS Low risk Average risk Moderate risk High risk TOTAL CHOLESTEROL in mg/dL <170 171-199 >=200 - CHOLESTEROL : HDL RATIO 3.3-4.4 4.5-7.1 7.2-11.0 >11.0 REMARKS Low risk Average risk Moderate risk High risk Cholesterol : HDL Ratio 3.3-4.4 4.5-7.1 7.2-11.0 >11.0 TRIGLYCERIDE in mg/dL LDL CHOLESTEROL in mg/dL <150 150-199 200-499 >=500 <110 111-129 >=130 - CARDIO CRP in (mg/L) <1.0 1.0-3.0 >3.0 APO B in (mg/dL) <80 80-119 >=120 Lp (a) in(mg/dL) >=50 Apo B / A1 Ratio 0.35-0.98 >0.98 Note: 1. Measurements in the same patient can show physiological& analytical variations. Three serial samples 1 week apart are recommended for Total Cholesterol, Triglycerides, HDL& LDL Cholesterol 2. . As per NLA-2014 guidelines, all adults above the age of 20 years should be screened for lipid status. Selective screening of children above the age of 2 years with a family history of premature cardiovascular disease or those with at least one parent with high total cholesterol is recommended. 3. NLA-2014 identifies Non HDL Cholesterol(an indicator of all atherogenic lipoproteins such as LDL , VLDL, IDL, Lpa, Chylomicron remnants)along with LDL-cholesterol as co- primary target for cholesterol lowering therapy. Note that major risk factors can modify treatment goals for LDL &Non HDL. 4.Apolipoprotein B is an optional, secondary lipid target for treatment once LDL & Non HDL goals have been achieved 5. If initial cardio CRP>10mg/L, it should be disregarded & measured again when patient stabilizes. Avoid measurement during acute infection, chronic inflammatory disease, post menopausal hormone therapy 6. If initial cardio CRP<10mg/L – use average of two values (measured 2 or more weeks apart;intraindividual variation being >40%) to estimate risk Comments The NCEP ATP III guidelines established LDL-C& Non LDL-C treatment goals in 2004 since then use of lipid lowering drugs particularly statins has reduced Atherosclerotic Cardiovasular disease (ASCVD) morbidity and mortality; however significant residual risk for the events remains. This combined with the rising prevalence of obesity, which has shifted the risk profile of the population toward patients in whom LDL -C is less predictive of ASCVD events (metabolic syndrome, low HDL Choleterol, elevated triglycerides). NLA 2014, recommended for those at moderate risk (2 major ASCVD risk), additional testing for inflammatory, non-lipid and other lipid biomarkers may be considered for risk refinement. The presence of one or more secondary risk factor should prompt the clinician to consider drug therapy for patient whose atherogenic cholesterol level is higher than goal level Major risk factors for ASCVD Age ( men >=45; women >=55) Family history of premature CHD (CHD in a male first degree relative < 55 years / CHD in a female first degree relative < 65 years) Cigarette smoking Hypertension ( BP >= 140/90 or on antihypertensive medication) Low HDL Cholesterol ( <40 mg/dL in males and <50 mg/dL in females) Diabetes mellitus Pre-existing ASCVD Secondary risk indicators for risk refinement Coronary artery calcium (>300 A considered high risk) LDL-C >160mg/dl and/or Non HDL-C >190 mg/dL hsCRP>2.0mg/L Lp(a) > 50mg/dl Urine Albumin/Creatinine ratio>30mg/gCrt Cholesterol:There is a clear cut relationship between elevated serum cholesterol and myocardial infarction. At the tissue level, it plays a prominent part in atherosclerotic lesions. Triglycerides: Elevated levels are seen with overnight fast less than 12 hours, Non insulin dependent Diabetes mellitus, Obesity, Alcohol intake, Hyperlipidemias (specially Types I, IV & V; > 1000), Pancreatitis ( > 500), Gout, Pregnancy, Drugs like thiazide diuretics, anabolic steroids, cholestyramine, corticosteroids, amiodarone& interferon. HDL Cholesterol: It is a cardioprotective cholesterol ( good cholesterol). Patients with low levels of HDL are at increased risk for premature ASCVD and is used in risk factor counting and quantitative risk assessment.HDL cholesterol levels are inversely related to an increase in body fat, waist circumference, triglyceride, small dense LDL particles, insulin resistance, systemic inflammation & cigarette smoking. LDL Cholesterol:LDL-C has traditionally been the primary target of therapy, the NLA Expert Panel consensus view is that Non HDL-C is a better primary target for modification than LDLC. Non HDL-C comprises the cholesterol carried by all potentially atherogenic particles, including LDL,IDL, VLDL, VLDL & Chylomicron remnants and Lp(a). Non HDL-C also simplifies the management of patients with high triglycerides as it incorporates triglyceride concentration indirectly. Apolipoprotein B: Each potentially atherogenic lipoprotein particlecontains one molecule of Apo B thus it is a direct indicator of number of circulating particles with atherogenic potential. Apo B is more powerful independent predictor of ASCVD than LDL Cholesterol. Apo B is a potential contributor to residual ASCVD risk because it may remain elevated in some individuals (especially those with elevated triglyceride and lower HDL cholesterol) who have attained there treatment goals for Non-HDL & LDL cholesterol. In NLA recommendation, 2014 Apo B is considered as an optional, secondary target for treatment Lipoprotein (a); Lp(a): Increased levels are usually familial showing an autosomal dominant pattern of inheritance and are associated with an increased risk of ASCVD, Cerebrovascular disease and Stroke. Generally the levels are not influenced by diet or common hyperlipidemic drugs but can be lowered by Niacin (Vitamin B3), Exercise, Neomycin & Estrogen replacement therapy. Cardio CRP: Elevated CRP levels is a risk factor for ASCVD that is independent of patient’s LDL value. Cardio CRP is a strong indicator of future cardiovascular events. Patients with elevated CRP levels may have greater benefit in risk reduction with statin therapy than those with lower CRP levels independent of LDL cholesterol values. Usage Patients with two major risk factors for ASCVD Patients with hypertriglyceridemia/metabolic syndrome/abdominal obesity/insulin resistance Patients with normal lipid profile but low HDL Patients on Statin therapy who have achieved desirable LDL-C & non HDL-C goals Clinical evidence of non CHD atherosclerosis or DM Family h/o premature CHD especially patients with Familial combined Hyperlipidemia (Tg> 150 mg/dl & Apo B > 120 mg/dl) which is the most common cause of premature CHD Familial HYpercholeterolemia Recurrent ASCVD events Comment A variety of genetic conditions are associated with accumulation in plasma of specific class of lipoprotein particles. The critical first step in managing lipid disorder is to determine the class or classes of lipoprotein that are increased or decreased in a patient. Frederickson classification can be helpful in this regard. The hyperlipidemic status should be evaluated to determine if it is a primary lipoprotein disorder or secondary to metabolic disease. The diagnosis of primary hyperlipidemia is made after secondary causes have been ruled out. It is important to diagnose primary lipid disorder since the underlying etiology has significant effect on development of CHD, on response to drug therapy, and on the management of other family members. Type II b is the most commonly inherited lipid disorder, occurring in approximately 1 in 200 persons.Familial hypertriglyceridemia (FHTG) is a relatively common (1:500) autosomal dominant disorder of unknown etiology. It is important to consider & rule out secondary causes of hypertriglyceridemia (Obesity, Type 2 DM, Alcoholism, Renal failure, Cushing's syndrome etc.) before making the diagnosis of FHTG. FREDRICKSON CLASSIFICATION Type of Hyperlipoproteinemia Molecular defect Estimated incidence Lipoprotein elevated Cholester ol, Total (mg/dL) Triglyceride (mg/dL) Serum Appearance I Familial Chylomicronemia Syndrome Lipoprotien lipasedefici ency; Apo C II deficiency Mutation in LDL receptor, Apo B 100 Unknown 1 in 1,000,000 Chylomicro ns + to ++ 200-400 1 in 500 LDL +++ 300-1000 1 in 200 LDL & VLDL ++ to +++ 280- 350 ++ 200-500 Clear to slightly turbid III Familial Dysbetalipoproteinemi a or Familial broadbetadisease Genetic variation in APO E 1 in 10,000 Chylomicro n and VLDL remnant (IDL) ++ to +++ 300- 500 ++ to +++ 200- 900 Clear to slightly turbid IV Familial hypertriglyceridemia Unknown 1 in 500 VLDL Usually <270 ++ 200-1000 Turbid 1 in 500 Chylomicro n & VLDL ++ to +++ <500 ++++ <3000 Milky II a Familial Hypercholesterolemia II b Familial Combined Hyperlipidemia V Familial hypertriglyceridemia Unknown ++++ > 3000 Normal Milky Clear
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