Biochemistry Page

A urine specimen is dark orange and turns brown after storage in the refrigerator overnight. The MLS requests a new specimen. The second specimen is bright orange and is tested immediately. Which test result would differ between the two specimens?
A. Ketone
B. Leukocyte esterase
C. Urobilinogen
D. Nitrite

Acquired hemolytic anemias are usually
due to
A. Extracorpuscular factors
B. Defects within the bone marrow
C. Intracellular factors
D. Changes in hemoglobin stability

Which total protein method requires
copper sulfate, potassium iodide in
sodium hydroxide, and potassium sodium
tartrate in its reagent system?
A. Kjeldahl
B. Biuret
C. Folin-Ciocalteu
D. Ultraviolet absorption

Which of the following plasma proteins is
not manufactured by the liver?
A. Albumin
B. Haptoglobin
C. Fibrinogen
D. IgG

Which immunoglobulin class is able to cross
the placenta from the mother to the fetus?
A. IgA
B. IgD
C. IgE
D. IgG

Which of the following reagents can be
used to measure protein in cerebrospinal
fluid?
A. Biuret
B. Coomassie brilliant blue
C. Ponceau S
D. Bromcresol green

Which disorder is not associated with an
elevated protein level in cerebrospinal
fluid?
A. Bacterial meningitis
B. Multiple sclerosis
C. Cerebral infarction
D. Hyperthyroidism

In a healthy individual, w h i c h protein
fraction has the greatest concentration in
serum?
A. Alphai-globulin
B. Beta-globulin
C. Gamma-globulin
D. Albumin