Infectious diseases are disorders caused by organisms such as bacteria, viruses, fungi, or parasites.

They can be transmitted through direct contact with an infected person, animal, insect bites, or contaminated food and water.

Symptoms vary but often include fever, fatigue, muscle aches, cough, and digestive issues.

Diagnosis involves physical examinations, medical history review, and diagnostic tests such as blood tests, cultures, and imaging.

Treatments may include antibiotics, antivirals, antifungals, antiparasitics, and supportive care depending on the type of infection.

HBsAg is a surface antigen of the hepatitis B virus, detected in the blood during HBV infection.

Individuals at risk of HBV infection or needing routine screening should undergo this test.

No, the test involves a simple blood draw, which may cause slight discomfort but is generally well-tolerated.

A positive result indicates the presence of HBV infection.

No, additional tests may be required to distinguish between acute and chronic infection.

The test helps diagnose rheumatoid arthritis by detecting specific antibodies associated with the condition.

A blood sample is collected and analyzed to measure the levels of anti-CCP antibodies.

No special preparation is required. You can eat and drink normally before the test.

Results are typically available within a few hours to 24 hours after the sample is processed.

Elevated levels suggest a higher likelihood of rheumatoid arthritis, but further clinical evaluation is needed for a definitive diagnosis.