Appendicitis Tests

Appendicitis is a medical emergency that requires prompt diagnosis and treatment. To diagnose appendicitis, doctors use a combination of physical examination, medical history, laboratory tests, and imaging studies.

Physical Examination

A physical examination is the first step in diagnosing appendicitis. The doctor will perform a thorough abdominal examination to check for tenderness, guarding (muscle tension), and rebound tenderness (pain when pressing on the abdomen and then releasing). The doctor may also perform a rectal examination to check for tenderness in the rectum.

Medical History

The doctor will ask questions about the patient's medical history, including symptoms such as abdominal pain, nausea, vomiting, fever, and loss of appetite. The doctor will also ask about the patient's bowel movements and urinary habits.

Laboratory Tests

Several laboratory tests can help diagnose appendicitis, including:

  • Complete Blood Count (CBC): This test measures the number of white blood cells in the blood. An elevated white blood cell count can indicate infection or inflammation.
  • Erythrocyte Sedimentation Rate (ESR): This test measures the rate at which red blood cells settle to the bottom of a test tube. An elevated ESR can indicate inflammation.
  • C-Reactive Protein (CRP) Test: This test measures the level of CRP in the blood. Elevated CRP levels can indicate infection or inflammation.
  • Urinalysis: This test checks for urinary tract infections, which can cause symptoms similar to appendicitis.

Imaging Studies

Imaging studies can help confirm the diagnosis of appendicitis and rule out other conditions. The following imaging studies may be used:

  • Abdominal Ultrasound: This test uses high-frequency sound waves to create images of the abdominal organs, including the appendix.
  • Computed Tomography (CT) Scan: This test uses X-rays and computer technology to create detailed images of the abdominal organs, including the appendix.
  • Magnetic Resonance Imaging (MRI): This test uses magnetic fields and radio waves to create detailed images of the abdominal organs, including the appendix.

Other Tests

In some cases, other tests may be used to diagnose appendicitis, including:

  • Laparoscopy: This is a surgical procedure that involves inserting a laparoscope (a thin tube with a camera and light) into the abdomen to visualize the appendix and other organs.
  • Appendix Ultrasound: This test uses high-frequency sound waves to create images of the appendix.

Diagnosis

A diagnosis of appendicitis is typically made based on a combination of physical examination, medical history, laboratory tests, and imaging studies. The doctor will consider the patient's symptoms, laboratory results, and imaging study findings to determine if appendicitis is present.

Article last updated on: 15th June 2025.
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