Fructosamine interference is high levels of Vitamin C, hyperthyroidism.
Pathways of glucose metabolism include Embden-Meyerhof, Hexose Monophosphate Sunt, Glycogenesis.
Microalbuminuria use detects early signs of kidney malfunction.
Causes of elevated glucose measurements include Diabetes Mellitus, Cushings, Steroid use, Stress, Pheochromocytoma.
Causes of decreased glucose measurements include Insulin overdose, Addisons, sepsis.
Osmolality measures total dissolved solutes in blood or urine.
Elevated BUN causes are Renal disease, Urinary obstruction, dehydration,shock,CHF, fever,stress, severe burns.
Normal creatinine levels are .6 - 1.2 mg/dl.
BUN normal levels are 10-20mg/dl.
Pre-renal azotemia is caused by low GFR, poor perfusion of kidney, dehydration,shock,CHF, fever,stress, severe burns.
Renal azotemia is caused by diminished GFR, associated with acute or chronic glomerulonephritis, polycystic kidney.
Post renal azotemia is caused by obstruction, stones, enlarged prostate.
Creatinine is directly proportional to renal function and more reliable as single index of renal function.
Creatinine clearance normal value is 107-139 ml/min.
GFR is the best overall indicator of kidney function, normal >60.
Uric acid normals are less than 10mg/dl.
Elevated Uric acid pathologic findings include Gout, turnover of malignant cells, renal stones.
Total protein normal values are normal 6.4-8.3 g/dl.
Hypoproteinemia etiology is increased loss, decreased formation or intake.
Prostate Specific Antigen (PSA) is a glycoprotein specific for prostate epithelium and is increased in prostate cancer.
The normal range for HDL is greater than 55 mg/dl.
The normal range for triglycerides is 40-160 mg/dl.
The normal range for potassium is 3.5-5.0 mmol/l.
The formula for calculating LDL is Total cholesterol - HDL - Triglycerides/5.
Conjugated bilirubin is known as direct and is excreted in bile, converted to fecobilinogen and urobilinogen.
An AST/ALT ratio less than one is seen in acute hepatitis, viral hepatitis, and mono.
Elevated LDH can be seen in myocardial infarction, hepatic disease, cancer, acute leukemia, and skeletal muscle necrosis.
Lipase is sourced from the pancreas and is normal in mumps.
Elevated chloride can be caused by dehydration, Cushing's syndrome, or metabolic acidosis.
Elevated sodium can be caused by excess dietary intake, aldosteronism, Cushing's syndrome, or Diabetes Insipidus.
ALT (SGPT) is the usual marker for hepatocellular injury and is usually higher than AST in liver disease, except in alcoholic hepatitis. An AST/ALT ratio greater than 2 is indicative of liver disease.