Lab Tests: Blood Specimen Collection and Analysis
30 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What type of blood specimen is preferred for hematological and biochemical investigations?

  • Arterial
  • Capillary
  • Mixed
  • Venous (correct)

What is the average hemoglobin level in a normal adult male?

  • 14-18 gm% (correct)
  • 12-14 gm%
  • 18-22 gm%
  • 16-20 gm%

What is the purpose of using a Sahli hemoglobinometer?

  • To diagnose anemia
  • To detect blood groups
  • To quantify hemoglobin in blood (correct)
  • To measure hematocrit value

What is the term for the phenomenon that results in higher hematocrit values in venous blood than in arterial blood?

<p>Chloride Shift Phenomenon (B)</p> Signup and view all the answers

What is the normal hematocrit value in a newborn infant?

<p>53-55% (B)</p> Signup and view all the answers

What is the term for the increase in hematocrit value due to loss of plasma volume?

<p>Dehydration (B)</p> Signup and view all the answers

What is the primary use of blood indices?

<p>Diagnosis of anemia and polycythemia (B)</p> Signup and view all the answers

What does a low MCH indicate?

<p>Hypochromic anemia (A)</p> Signup and view all the answers

What is the normal range for MCV?

<p>80-95 cubic microns (C)</p> Signup and view all the answers

What type of anemia is caused by vitamin B12 deficiency?

<p>Macrocytic anemia (D)</p> Signup and view all the answers

What is the formula to calculate MCH?

<p>Hemoglobin in gm / RBCs count in millions × 10 (A)</p> Signup and view all the answers

What type of anemia is caused by chronic bleeding?

<p>Normocytic anemia (A)</p> Signup and view all the answers

What is the result of abnormally decreased RBCs and conditions that cause tissue breakdown on ESR?

<p>Increase in ESR (D)</p> Signup and view all the answers

What is the normal range for bleeding time?

<p>1-4 minutes (D)</p> Signup and view all the answers

What is the MCH of an individual with a RBCs count of 3000000/mm3 and hemoglobin content 7 gm?

<p>23.3 pg (A)</p> Signup and view all the answers

What is the effect of purpura on coagulation time?

<p>No effect on coagulation time (D)</p> Signup and view all the answers

What type of anemia is characterized by a low MCH?

<p>Hypochromic anemia (B)</p> Signup and view all the answers

What is the purpose of the osmotic fragility test?

<p>To determine RBCs fragility (D)</p> Signup and view all the answers

What is the cause of prolonged coagulation time in patients with liver disease or obstructive jaundice?

<p>Vitamin K deficiency (A)</p> Signup and view all the answers

What is the effect of anticoagulant administration on coagulation time?

<p>Prolongation of coagulation time (A)</p> Signup and view all the answers

What is the result of the osmotic fragility test in individuals with hereditary spherocytosis?

<p>Hemolysis starts at 0.7% and complete at 0.5% (A)</p> Signup and view all the answers

Why do RBCs tend to sediment towards the bottom of a vertical tube in Westergreen's technique?

<p>Specific gravity of RBCs is greater than specific gravity of plasma (C)</p> Signup and view all the answers

What is the effect of splenectomy on coagulation time?

<p>Shortening of coagulation time (B)</p> Signup and view all the answers

What is a physiological increase in ESR observed during?

<p>Pregnancy and menstruation (A)</p> Signup and view all the answers

What percentage of the population has blood type A?

<p>40% of population (A)</p> Signup and view all the answers

What is the term for the agglutinogen present in the RBCs of Rhesus monkeys?

<p>Rh factor (B)</p> Signup and view all the answers

Why is blood group O called the universal donor?

<p>Because it contains no agglutinogen (C)</p> Signup and view all the answers

What is the percentage of people who are Rh positive?

<p>85% of people (B)</p> Signup and view all the answers

What is the result of agglutination of RBCs?

<p>Agglutinin is markedly neutralized and agglutinogen is markedly diluted (D)</p> Signup and view all the answers

What is the result of blood transfusion from an Rh +ve person to an Rh -ve person?

<p>Anti-Rh antibody is formed (D)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Browser