Test your basic knowledge |

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. Turbidity in serum suggests elevation of...






2. Magnesium carbonate is added in an iron binding capacity determination in order to...






3. 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






4. Cerebrospinal fluid for glucose assay should be...






5. Alkaline phosphatase Slight increase - Aminotransferase Marked increase - Aspartate aminotransferase Marked increase - Alanine gamma-glutamyl transferase Slight increase






6. Lasting serum phosphate concentration is controlled primarily by the...






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






8. 4 mL of water is added to 1 mL of serum. This represents this serum dilutions






9. 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...






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






11. 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?






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






13. If the correlation coefficient (r) of two variables is zero...






14. The extent to which measurements agree with or approach the true value of the quantity being measured is referred to as...






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






16. 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...






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






18. 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...






19. 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?






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






21. A reciprocal relationship exists between...






22. Four children are admitted with malaise - anorexia - and abdominal pain. Further evaluations reveal mild anemia - erythrocyte basophilic stippling - and profound pica habits. Poisoning by which heavy metal is most likely responsible?






23. An automated method for measuring chloride that generates silver ions in the reaction is...






24. The biuret reaction for the analysis of serum protein depends on the number...






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






26. Patients with Cushing's syndrome exhibit...






27. A thick white turbid specimen was received in the laboratory labeled as pericardial fluid. A microscopic examination was performed - and the differential included 90% PMNs. The fluid is...






28. The method of choice for diagnosis of a protracted attack of porphyria is...






29. 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






30. This method offers the greatest sensitivity for HBsAg testing






31. Enzymes used in the diagnosis of acute pancreatitis?






32. A potassium level of 6.8 mEq/L is obtained. Before reporting the results - the first step the technologist should take is to...






33. Blood was collected in a serum separator tube from a patient who had been fasting since midnight. The time of collection was 7:00 AM. The laboratory test that should be re-collected is...






34. A patient with myeloproliferative disorder has the following values: Hgb = 13 g/dL Hct = 38% WBC = 30 x 10^3/uL Platelets = 1000 x 10^3/uL Serum Na+ = 140 mEq/L Serum K+ = 7 mEq/L The serum K+ should be confirmed by...






35. This serum constituent is unstable if a blood specimen is left standing at room temperature for 8 hours before processing






36. In a normal individual - injection of thyrotropin-releasing hormone (TRH) causes an increase in blood concentrations of this hormone






37. A stool specimen that appears black and tarry should be tested for the presence of...






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






39. A blood gas sample was sent to the lab on ice - and a bubble was present in the syringe. The blood had been exposed to room air for at least 30 minutes. The following change in blood gases occurred...






40. A 25-year-old man became nauseated and vomited 90 minutes after receiving a standard 75-g carbohydrate dose for an oral glucose tolerance test. The best course of action is...






41. Aminotransferase enzymes catalyze the...






42. Cocaine is metabolized to...






43. Most automated blood gas analyzers directly measure...






44. A pH of 7.0 represents a H+ concentration of...






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






46. This condition does decrease activity of glucuronyl transferase result in increased unconjugated bilirubin and kernicterus in neonates






47. Diagnostic specificity is defined as the percentage of individuals...






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






49. 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...






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