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Chemistry Certification

Subject : certifications
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. At blood pH 7.40 what is the ratio between bicarbonate and carbonic acid?






2. Specimens for blood gas determination should be drawn into a syringe containing...






3. In using ion-exchange chromatographicbmethods - falsely increased levels of Hgb A1c will be demonstrated in presence of...






4. In performing a spinal fluid protein determination - the specimen is diluted 1 part spinal fluid to 3 parts saline to obtain a result low enough to measure. To calculate the protein concentration the result must be...






5. Upon completion of a run of cholesterol tests - the technician recognizes that the controls are not within the two standard deviations confidence range. What is the appropriate course of action?






6. The hemoglobin that is resistant to alkali (KOH) denaturation is...






7. Which percentage of total serum calcium is nondiffusible protein bound?






8. Given the following results: Alkaline phosphatase Marked increase Aminotransferase Slight increase Aspartate aminotransferase Slight increase Alanine gamma-glutamyl transferase Marked increase This is most consistent with...






9. A patient is admitted to the emergency room in a state of metabolic alkalosis.This would be consistent with this diagnosis?






10. Detection of carriers of hereditary coproporphyria should include analysis of...






11. This serum protein migrates with the beta-globulins on cellulose acetate at pH 8.6...






12. In the assay of lactate dehydrogenase - this product is actually measured






13. This wavelengths is within the ultraviolet rang.






14. Malic dehydrogenase is added to the aspartate aminotransaminase (AST) reaction to catalyze the conversion of...






15. The osmolality of a urine or serum specimen is measured by a change in the...






16. A fasting serum sample from an asymptomatic 43-year-old woman is examined visually chemically with the following results: Initial appearance of serum: Milky Appearance of serum after overnight refrigeration: Cream layer over turbid serum Triglyceri






17. Serum anion gap is increased in patients with...






18. Analysis of erythrocytes for uroporphyrinogen I synthetase detects...






19. Serum concentrations of vitamin B12 are elevated in...






20. A blood creatinine value of 5.0 mg/dL is most likely to be found with this blood value?






21. In spectrophotometric determination - this is the formula for calculating the absorbance of a solution






22. This electrolyte is the chief plasma cation whose main function is maintaining osmotic pressure






23. A patient had the following serum results: Na+ 140 mEq/L K+ 4.0 mEq/L Glucose 95 mg/dL BUN 10 mg/dL Which osmolality is consistent with these results?






24. A 45-year-old woman complains of fatigue - heat intolerance - and hair loss. Serum thyroxine and 125I-T3 resin uptake are abnormally low. What test would confirm that this is a pituitary deficiency?






25. A serum potassium is 19.5 mg/100 mL. This value is equal to how many mEq/L (MW of K = 39)?






26. The main reason for suboptimal drug levels in therapeutic drug monitoring is...






27. An acid cleaning solution for glassware consists of...






28. Spectrophotometers isolate a narrow band pass by means of...






29. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) are both elevated in this disease






30. As part of a hyperlipidemia screening program - the following results were obtained on a 25 year old woman 6 hours after eating:Triglycerides = 260 mg/dLCholesterol = 120 mg/dL - This is the BEST interpretation of these results?






31. In electrophoretic analysis - buffers...






32. The enzyme that exists chiefly in skeletal muscle - heart - and brain; is grossly elevated in active muscular dystrophy; and rises early in myocardial infarction is...






33. The following laboratory results were obtained on arterial blood: Sodium 136 mEq/L pH 7.32 Potassium 4.4 mEq/L PCO2 79 mm Hg Chloride 92 mEq/L Bicarbonate 40 mEq/L These results are most compatible with...






34. The unit of measure for a standard solution is...






35. Before unconjugated bilirubin can react with Ehrlich's diazo reagent - this must be added






36. On immunoassays using enzyme-labeled antibodies or antigens: ___________ can be carried out with a spectrophotometer






37. The function of the major lipid components of the very low density lipoproteins (VLDL) is to transport...






38. Cocaine is metabolized to...






39. The general types of interference in atomic absorption spectrophotometry...






40. The reason carbon monoxide is so toxic is because it...






41. Calcium concentration in the serum is regulated by...






42. Assay of transketolase activity in blood is used to detect deficiency of...






43. In familial hypercholesterolemia - the hallmark finding is an elevation of...






44. This lipid results would be expected to be falsely elevated on a serum specimen from a nonfasting patient






45. When separating serum proteins by cellulose acetate electrophoresis using veronal buffer at pH 8.6 - beta globulin migrates...






46. What specimen preparation is commonly used to perform the alkaline phosphatase isoenzyme determination?






47. Characteristic of the Bence Jones protein that is used to distinguish it from other urinary proteins is its solubility...






48. The concentration of serum carotene is affected MOST by...






49. One means of checking a spectrophotometer wavelength calibration in the visible range is by using a...






50. The formula for calculating absorbance given the percent transmittance (%T) of a solution