CLINICAL CHEMISTRY

32問 • 1年前

問題一覧

Which of the following approaches to analyzer automation can use mixing paddles to stir? a. Discrete analysis b. Centrifugal analysis c. Continuous flow d. Dry chemistry slide analysis

a. Discrete analysis

Which of the following types of analyzers offers random access capabilities? a. Discrete analyzers b. Continuous flow analyzers c. Centrifugal analyzers d. None of these

a. Discrete analysis

All of the following are primary considerations in the selection of an automated chemistry analyzers, except: a. How reagents are added or mixed b. The cost of consumables c. Total instrument cost d. The labor component

a. How reagents are added or mixed

Dwell time refers to: a. Time between initiation of a test and the completion of analysis b. Number of tests an instrument can handle in a specified time c. Ability of an instrument to perform a defined workload in a specified time. d. None of these

a. Time between initiation of a test and the completion of analysis

All of the following are advantages to automation, EXCEPT: a. Correction for deficiencies inherent in methodologies b. Increased number of tests performed c. Minimized labor component d. Use of small amounts of samples and reagents in comparison to manual procedures.

a. Correction for deficiencies inherent in methodologies

Which of the following steps in automation generally remains a manual process in most laboratories? a. Preparation of the sample b. Specimen measurement and delivery c. Reagent delivery d. Chemical reaction phase

a. Preparation of the sample

Which of the following chemistry analyzers uses slides to contain the entire reagent system? a. VITROS analyzers b. ACA analyzers c. Synchron analyzers d. None of these

a. VITROS analyzers

Modifications in microsampling and reagent dispensing improve which of the following phases in clinical testing? a. Physician ordering phase b. Preanalytical phase c. Analytical phase d. Postanalytical phase e. All of the above phases

c. Analytical phase

Bidirectional communication between the chemistry analyzer and the laboratory information system has had the greatest impact on which of the following phases of clinical testing? a. Preanalytical b. Analytical c. Postanalytical d. All of the above e. None of the above

c. Postanalytical

Mass spectrometry identifies analytes based on: a. Mass-to-charge ratio b. Retention factor c. Density of the band d. Molecular weight e. Solubility in the mobile phase

a. Mass-to-charge ratio

Which of the following light sources is used in atomic absorption spectrophotometry? a. Hollow-cathode lamp b. Xenon arc lamp c. Tungsten light d. Deuterium lamp e. Laser

a. Hollow-cathode lamp

Which of the following techniques has the highest potential sensitivity? a. Chemiluminescence b. Fluorescence c. Turbidimetry d. Nephelometry e. Phosphorescence

a. Chemiluminescence

Which electrochemical assay measures current at fixed potential? a. Amperometry b. Anodic stripping voltammetry c. Coulometry d. Analysis with ISEs e. Electrophoresis

a. Amperometry

Which of the following is the most sensitive detector for spectrophotometry? a. Photomultiplier b. Phototube c. Electron multiplier d. Photodiode array e. All are equally sensitive

a. Photomultiplier

It is reported that the greatest percentage of laboratory errors occur during the ______ phase. a. Preanalytical b. Analytical c. Postanalytical d. Proficiency e. Phlebotom

a. Preanalytical

Interference studies typically use _____ as an interferent. a. All of these b. Hemolyzed red cells c. Highly icteric samples d. Highly lipemic samples

a. All of these

A reference range can be verified by: a. Testing as few as 20 normal donor specimens b. Literature and vendor material review c. Using samples from previously tested hospital patients d. using pharmacy-provided Plasmanate spiked with target concentrations

a. Testing as few as 20 normal donor specimens

Reference interval transference studies: a. Are used to verify a reference interval b. Are used to establish a reference interval c. Require as many as 120 donors d. Use a 68% reference limit for acceptability.

a. Are used to verify a reference interval

If two methods agree perfectly in a method comparison study, the slope equals ______ and the y-intercept equals ______. a. 1.0, 0.0 b. 0.0, 1.0 c. 1.0,1.0 d. 0.0, 0.0 e. 0.5, 0.5

a. 1.0, 0.0

What are the major contributing factors to repetitive strain injuries? a. Position/posture, applied force, and frequency of repetition. b. Inattention on the part of the laboratorian c. Temperature and vibration d. Fatigue, clumsiness, and lack of coordination

a. Position/posture, applied force, and frequency of repetition

Which of the following is the proper means of disposal for the type of waste? a. Microbiologic waste by steam sterilization b. Xylene into the sewer system c. Mercury by burial d. Radioactive waste by incineration

a. Microbiologic waste by steam sterilization

One liter of 4N sodium hydroxide (strong base) in a glass 1L beaker accidentally fell and spilled on the laboratory floor. The first step is to: a. Call 911 b. Alert and evacuate those in the immediate area out of harm’s way. c. Throw some kitty litter on the spill d. Squirt water on the spill to dilute the chemical. e. Neutralize with absorbing materials in a nearby spill kit

b. Alert and evacuate those in the immediate area out of harm’s way.

A fire caused by a flammable liquid should be extinguished using which type of extinguisher? a. Class B b. Halogen c. Pressurized water d. Class C

a. Class B

A patient’ serum sample was placed on the chemistry analyzer and the output indicated “out of range” for the measurement of creatine kinase (CK) enzyme. A dilution of the patient serum was required. Which of the following should be used to prepare a dilution patient serum? a. Deionized water b. Tap water c. Another patient’s serum with confirmed, low levels of CK d. Type III water e. Type I water

e. Type I water

What is the molarity for a solution containing 100 g of NaCl made up to 500 mL with distilled water? Assume a GMW of approx. 58 grams. a. 3.45 M b. 1.72 M c. 290 M d. 5.27 M

a. 3.45 M

What is the percent (w/v) for a solution containing 100 g of NaCl made up to 500 mL with distilled water? a. 20% b. 5% c. 29% d. 58%

a. 20%

What is the value in mg/dL for a solution containing 10 mg of CaCl2 made with 100 mL of distilled water? a. 10 b. 100 c. 50 d. Cannot be determined without additional information

a. 10

REFERENCE METHODS ELECTROLYTES -

AAS

REFERENCE METHODS HBA1C

-HPLC

REFERENCE METHODS LIPASE-

CHERRY AND CRANDALL METHOD

REFERENCE METHODS AMS-

SACCHAROGENIC METHOD

REFERENCE METHODS ALP-

BOWERS AND MCCOMB METHOD

other names parasitology

Yves Laure Pimentel · 70問 · 2年前

other names parasitology