Practical Hematology Quiz

Study Notes

Practical Hematology and Blood Sampling

Whole blood constitutes 8% of body weight, with water making up 91.5% of its composition.
Plasma accounts for 55% of blood, with plasma protein comprising 7% and other solutes 1.5%.
Cells make up 45% of blood, with RBCs ranging from 4.5-6 million/mm3, platelets from 150,000-400,000/mm3, and WBCs from 4000-11000/mm3.
The composition of plasma proteins includes albumin at 54%, globulin at 38%, fibrinogen at 7%, and other proteins at 1%.
Hematology is the science that studies the characteristics of blood samples, with the purpose of diagnosing blood parasites, before blood transfusions, and for detecting blood groups and biochemical substances.
Ordinary hematological investigations involve RBCs count, WBCs count, DLC, TLC, PCV, ESR, and Platelets count.
Precautions before taking blood samples include choosing a healthy site free from edema or abscess, sterilizing the site with 75% ethyl alcohol, and ensuring the needle and syringe are clean and sterilized.
The amount of blood drawn depends on the type and size of the animal, with small animals requiring 3 cm and large animals requiring 5 cm.
Sites for taking blood samples in different animals include the jugular vein for cattle, horse, sheep, and goat, and the saphenous vein or cephalic vein for dogs.
The aims of blood sampling include diagnosing blood parasites, before blood transfusion, detecting blood groups, and diagnosing biochemical substances.
Ordinary hematological investigations involve RBCs count, WBCs count, DLC, TLC, PCV, ESR, and Platelets count.
Precautions before taking blood samples include choosing a healthy site free from edema or abscess, sterilizing the site with 75% ethyl alcohol, and ensuring the needle and syringe are clean and sterilized.