The Trichinella spiralis IgM test is a useful tool for early detection of trichinosis, a parasitic infection caused by consuming raw or undercooked meat. By detecting IgM antibodies, which appear soon after infection, this test helps accurately diagnose trichinosis. If you experience symptoms such as muscle pain, fever, fatigue, swelling around the eyes, abdominal pain, diarrhea, nausea, or vomiting, consider taking this test. The simple procedure involves taking a small blood sample from a vein in your arm. A positive result confirms that you have been infected with Trichinella spiralis, while a negative result may indicate that you are not infected or the test was done too early for detection.