Published: 18 Feb 2024

Blood Tests

Procedure:

* A small sample of blood is drawn from a nerve in the center of the elbow.
* For children, anesthetic cream is applied to minimize discomfort.
* Blood may occasionally be drawn from the wrist if the nerve is not easily accessible.

Purpose:

* Blood tests provide information about a person's overall health and detect potential medical conditions.
* Test results may guide treatment plans and provide insights into the severity of illnesses.
* Blood tests can help identify abnormalities or confirm normal results.

Interpretation:

* If you have any questions about your test results, consult your doctor for clarification.
* Discuss the results with your doctor to understand any potential concerns or abnormalities.

Blood's Composition and Functions:

Blood is a liquid connective tissue that transports substances throughout the body:

* Transport: Nutrients, oxygen, waste products, metabolites, and harmful gases
* Immunity: Circulation of white blood cells and detection of foreign substances
* Coagulation: Clot formation to seal wounds and prevent blood loss
* Messenger and Transporter: Hormones and tissue damage signals
* Blood Cells: Red blood cells, white blood cells, and platelets

Additional Functions of Blood:

* Immunological functions (circulation of white blood cells)
* Detection of foreign material by antibodies
* Healing of injuries (internal and external)
* Defense against pathogens