Clinical Chem Practice Questions
COMPLETE SOLUTIONS
in what form is glucose stored in the liver? - ✔✔glycogen
which of the following hormones has the ability to decrease glucose concentration?
-glucagon
-epinephrine
...
Clinical Chem Practice Questions
COMPLETE SOLUTIONS
in what form is glucose stored in the liver? - ✔✔glycogen
which of the following hormones has the ability to decrease glucose concentration?
-glucagon
-epinephrine
-insulin
-thyroxine - ✔✔insulin
which form of diabetes manifest itself later in life and is associated with obesity, physical inactivity, and
glycosuria? - ✔✔type 2 diabetes
which of the following is a characteristic of type 1 diabetes mellitus?
-low insulin levels
-ketosis often accompanied by hyperglycemia
-high frequency of autoab to islet calles
-all of the above - ✔✔all of the above
which statement regarding glycosylated hgb (A1c) is true?
-it has a sugar attached to the hgb-beta-chain
-it is dependent on the time avg blood glucose over the rbc life
-levels below 7% indicate adequate regulation for 8-12 weeks prior to sampling
-all of the above - ✔✔all of the above
what hormone plays a primary role in controlling the reabsorption of Na in the tubules?
-cortisol
-cortisone
-estriol
-aldosterone - ✔✔aldosterone
list 3 post-analytical errors associated with chemistry specimens - ✔✔the accuracy of the results,
reported results not delivered to the physician on time or having instrument malfunctions
which of the following blood additives is most useful for serum collection?
-polymer barrier
-oxalate
-EDTA
-citrate - ✔✔polymer barrier (SST)
which one of the following electrolytes is the major intracellular cation?
-Na
-K
-Cl
-Ca - ✔✔potassium (K)
which of the following is not included in the electrolyte panel?
-Na
-Ca
-K
-Cl - ✔✔Ca
electrolyte panel: Na, K, Cl, CO2 (HCO3)
which of these electrolytes would be affected the most by hemolysis?
-Cl
-Na
-K
-Ca - ✔✔potassium (K)
CO2 is predominately found in blood in the form of
-bound CO2
-bicarbonate ions
-sodium carbonate
-pCO2 - ✔✔bicarbonate ions (HCO3)
sodium fluoride is an excellent preservative for collecting glucose specimens because:
-prevents interference with other substances
-inhibits glycolysis
-enhances chemical rxn
-inhibits certain clotting factors - ✔✔inhibits glycolysis
fluoride inhibits enolase in the glycolytic pathway
which of the following is not a characteristic of severe hyperglycemia?
-polyuria
-ketonuria
-glycosuria
-hypoglucogonemia - ✔✔hypoglucogonemia???
which test maybe performed to assess the avg plasma glucose level that an individual maintained during
a previous 2-3 month period?
-plasma glucose
-2-hr postprandial glucose
-oral glucose tolerance
-glyocated hgb - ✔✔glyocated hgb (A1c)
lab tests are performed for a postmenopausal 57 yr old woman as part of an annual physical
examination. the pt's random serum glucose is 220 mg/dL, and the A1C is 11%. Based on this
information, this pt would most likely be classified as
-normal
-impaired
-having type 1 diabetes
-having type 2 diabetes - ✔✔having type 2 diabe
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