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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. While performing a serum lithium determination on a flame photometer with cesium as the internal standard - the technologist noticed that there was a flickering flame. The most probable cause of this problem is...






2. A patient with hemolytic anemia will...






3. Most most likely to be ordered in addition to serum calcium to determine the cause of tetany?






4. In electrophoresis of proteins - when the sample is placed in an electric field connected to a buffer of pH 8.6 - all of the proteins...






5. A chemiluminescent EIA...






6. When taken by a euthyroid individual - oral contraceptives containing estrogens will have this effects on the thyroid function studies






7. 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






8. In the atomic absorption method for calcium - lanthanum is used...






9. A blood sample was received from the emergency room with a request for narcotic analysis. The request slip indicated that the patient (a known heroin addict) responded to naloxone administration. The serum was negative for morphine by EIA. What other






10. Given the following values:100;120;150;140;130;What is the mean?






11. The definitive diagnosis of primary adrenal insufficiency requires demonstration of...






12. This disease is associated with the greatest elevation of lactate dehydrogenase isoenzyme 1?






13. Total iron-binding capacity measures the serum iron transporting capacity of...






14. The presence of this isoenzymes indicates acute myocardial damage






15. Serum from a patient with metastatic carcinoma of the prostate was separated from the clot and stored at room temperature. The following results were obtained: Patient Reference Range Calcium: 10.8 mg/dL 8.8-10.3 mg/dL LD:420 U/L 50-150 U/L Acid phos






16. In automated methods utilizing a bichromatic analyzer - dual wavelengths are employed to...






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






18. The electrophoretic pattern of a plasma sample compared with a serum sample shows a...






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






20. The formation of estriol in a pregnant woman is dependent on...






21. The first step in analyzing a 24-hour urine specimen for quantitative urine protein is...






22. A test request slip indicates that an acute porphyric attack is suspected clinically. Analysis should include...






23. The following five sodium control values (mEq/L) were obtained:140 - 135 - 138 - 140 - 142Calculate the coefficient of variation.






24. This would be an example of a glucose-specific colorimetric method






25. Blood specimens for digoxin assays should be obtained between 8 hours or more after drug administration because...






26. The formula for calculating serum osmolality that incorporates a correction for the water content of plasma is...






27. A fresh urine sample is received for "porphyrins" or "porphyria" without further information or specifications. Initial analysis should include...






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






29. A 2-year-old child with a decreased serum T4 is described as being somewhat dwarfed - stocky - overweight - and having coarse features. Of the following - the most informative additional laboratory test would be the serum...






30. These enzymes of heme biosynthesis are inhibited by lead






31. The different water content of erythrocytes and plasma makes true glucose concentrations in whole blood a function of the...






32. A 68-year-old man arrives in the emergency room with a glucose level of 722 mg/dL and serum acetone of 4+ undiluted. An arterial blood gas from this patient is likely to indicate...






33. 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






34. The TRH (thyrotropin-releasing hormone) stimulation test is useful in assessing...






35. One international unit of enzyme activity is the amount of enzyme that - under specified reaction conditions of substrate concentration - pH - and temperature - causes utilization of substrate at the rate of...






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






37. The following laboratory results were obtained: Serum Calcium: Increased - Urine Calcium: Increased - Serum Phosphate: Decreased - Urine Phosphate: Increased Serum Alkaline Phosphatase: Normal or Increased These results are most compatible with...






38. The test for adrenal cortical hyperfunction that has the greatest diagnostic sensitivity is measurement of...






39. The greatest activities of serum AST and ALT are seen in...






40. What substance gives feces its normal color?






41. Amino acid associated with a sulfhydryl group






42. In amniotic fluid - the procedure used to detect Rh isosensitization is...






43. 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...






44. In electrophoretic analysis - buffers...






45. Gas chromatography with the nitrogen/phosphorus detector is the most commonly used technique for the analysis of...






46. Maple syrup urine disease is characterized by an increase in this urinary amino acids






47. In competitive inhibition of an enzyme reaction the...






48. Lithium therapy is widely used in the treatment of...






49. The first step to be taken when attempting to repair a piece of electronic equipment is...






50. When the exact concentration of the solute of a solution is known and is used to evaluate the concentration of an unknown solution - the known solution is...