All of the following factors must be demonstrated before metal toxicity is considered a diagnosis except:

List 3 factors that influence enzymatic reactions?

Severe hypothyroidism that develops during the newborn period is referred to as

A 6-year-old girl has complained about painful urination and is taken to her pediatrician. There is NO family history of CHD or any lipid abnormalities. After a fasting blood specimen and urine specimen are obtained, laboratory findings are as follows (healthy reference intervals are in parentheses): serum albumin 1.8 g/dL (3.5–5.5 g/dL), total serum cholesterol 215 mg/dL, LDL cholesterol 130 mg/dL, serum triglyceride 250 mg/dL, serum blood urea nitrogen (BUN) 23 mg/dL, heavy urine protein (normal is negative), and 1+ urine blood (normal is negative). All other laboratory values were normal. These findings are most compatible with

A physician asks your laboratory to begin performing thyroid-stimulating hormone (TSH) analyses on all specimens that have a free thyroxine (FT4) analysis ordered, a practice that your laboratory currently does not perform. Your laboratory typically performs TSH only on those FT4 specimens that are outside the population-based reference interval. The physician suggests using subject-based reference intervals, claiming that population-based intervals are clinically insensitive. What is the basis of this claim?

An ideal cardiac marker should be elevated in the circulation for how long following a cardiac event?

What hormone(s) are produced by the posterior pituitary?

A 16 year old female with type I diabetes mellitus attended clinic. She had a history of poor glycemic control. On examination she had hepatomegaly. The following results were obtained for plasma glucose, liver function tests, and lipids: Test Patient Reference Range Glucose 594 mg/dL   Total bilirubin 0.70 mg/dL 0-1.0 mg/dL Conjugated bilirubin 0.40 mg/dL 0-0.5 mg/dL Alkaline phosphatase Normal   GGT Elevated   AST 188 IU/L 5-30 U/L ALT 380 IU/L 0-37 U/L Total Cholesterol 306 mg/dL   Triglycerides 1177 mg/dL   HDL 4 mg/dL   1. What results are abnormal? (1 point) 2. Calculate indirect/unconjugated bilirubin? (1 point) 3. Report the LDL (in whole numbers) for this patient. (1 point) 4. What would you expect the result of the Hemoglobin A1c to be? (Increased, decreased, or normal) (1 point)

An individual’s laboratory results indicate increased serum creatinine and urea values, and his physician’s diagnosis indicates a postrenal obstruction. What would the glomerular filtration rate in this individual likely be?

A hypertensive, hypokalemic patient with increased aldosterone production and decreased plasma renin activity likely has