Clinical Chemistry Exam #3 with correct answers 2024
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Module
Clinical Chemistry Exa
Institution
Clinical Chemistry Exa
The following serum results are consistent with which of the following conditions?
- BUN 15 mg/dL
- Creatinine 0.70 mg/dL
- Uric acid 5.0 mg/dL correct answers Normal, Healthy adult
What nonprotein nitrogen substance is in the highest concentration of blood? correct answers Urea
Which of...
The following serum results are consistent with which of the following conditions?
- BUN 15 mg/dL
- Creatinine 0.70 mg/dL
- Uric acid 5.0 mg/dL correct answers Normal, Healthy adult
What nonprotein nitrogen substance is in the highest concentration of blood? correct
answers Urea
Which of the following causes pre-renal azotemia? correct answers congestive heart
failure
An elevated BUN and creatinine are commonly seen in which of the following
conditions? correct answers kidney failure
The Jaffe reaction is used to measure what analyte? correct answers creatinine
What analyte is hydrolyzed by urease? correct answers urea
In gout, what analyte is characteristically elevated? correct answers uric acid
What kidney function does the creatinine clearance test assess? correct answers
glomerular filtration
Plasma is the specimen of choice for what non-protein nitrogen analyte? correct
answers ammonia
Given the following data, calculate the creatinine clearance:
- Serum creatinine = 1.2 mg/dL
- Urine creatinine = 120 mg/dL
- 24 hour volume = 2880 mL correct answers 200
creatinine urine/ creatinine serum * volume urine/ 1440 mins
**note: 24 hours * 60 mins = 1440 minutes**
What electrochemical technique measures the current produced through oxidation or
reduction between the indicator and reference electrodes? correct answers
amperometry
Which of the following methods of anlysis involve thd direct measurement of electrical
potential due to the activity of free ions? correct answers potentiometry
, Ion-selective electrodes for the measurement of chloride have replaced which of the
following electrochemical techniques? correct answers coulometry
An optical sensor used in analytical instruments to measure pH, blood gases, and
electrolytes is referred to as a(n) correct answers optode
Using ion-selective electrodes, the voltage of the measuring electrode is compared to
which of the following? correct answers the voltage of the reference electrode
What method measures the current flowing through an electrochemical cell at a
constant applied electrical potential? correct answers amperometry
The pH electode uses what type of membrane? correct answers glass
The Clark electrode measures which of the following analytes? correct answers pO2
Which of the following measures the voltage difference between two half-cells
immersed in solution? correct answers potentiometry
Which one of the following voltage potentials occurs as the result of chemical
equilibrium involving electron transfer reactions? correct answers redox potential
With indirect ISE measurement, the sample is diluted prior to analysis, thus prone to
pseudohyponatremia. correct answers True
Which of the following is a protein losing condition characterized by massive
proteinuria? correct answers nephrotic syndrome
Where is urine stored until voided from the body? correct answers bladder
What is the functional unit of the kidney? correct answers nephron
In what part of the nephron, does filtration occur? correct answers glomerulus
Antidiuretic hormone and aldosterone act on what part of the nephron? correct answers
distal convoluted tubule
What analyte makes up the majority of the nonprotein nitrogen waste excreted by the
kidney? correct answers urea
What hormone regulates water balance in the body? correct answers antidiuretic
hormone
Which of the following hormones are produced by the kidneys? correct answers
erythropoietin and renin
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