30. Which statement is correct regarding sample storage for the prothrombin time

Question

30. Which statement is correct regarding sample storage for the prothrombin time test? a. Stable for 24 hours if the sample is capped b. Stable for 24 hours if the sample is refrigerated at 4°C c. Stable for 4 hours if the sample is stored at 4°C d. Should be run within 8 hours 31. Which immunoglobulin can cross the placenta? a. IgG b. IgM c. IgA d. IgE 32. Which immunoglobulin appears in highest titer in the secondary response? a. IgG b. IgM c. IgA d. IgE 33. All of the following hepatitis viruses are spread through blood or blood products except: a. Hepatitis A b. Hepatitis B c. Hepatitis C d. Hepatitis D 34. Which hepatitis B marker is the best indicator of early acute infection? a. HBsAg b. HBcAg c. Anti-HBc d. Anti-HBs 35. Which test, other than serological markers, is most consistently elevated in viral hepatitis? a. Antinuclear antibodies b. Alanine aminotransferase (ALT) c. Absolute lymphocyte count d. Lactate dehydrogenase

Explanation / Answer

For prothrombin time test the sample can be stable if stored at 4 degree Celsius for 24 hours only.

Immunoglobulin G can cross placenta.

In secondary infection Imminoglobulin G appears in highest titre.

Most of the gepatitis virusre are spread through blood or blood products except Hepatitis A and Hepatitis E vitus.

HBeAg is the Hepatitis B merker which is the best indicator of early acute infection.

Other than serological markers antinuclear antibodies are found higher in viral hepatitis. Other merkers like absolute lymphocyte count is not significantly altered, lactate dehydrogenase and alanine amino transferase levels are higher in ischeamic hepatitis rather than viral hepatitis.

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