Common veg food allergen test is a laboratory test that detects allergic reactions to common vegetables such as carrots, cucumbers, and tomatoes. The test is performed by taking a blood sample from the patient and analyzing it for the presence of specific IgE antibodies that indicate an allergic reaction. Results are typically available within a few days and can help guide treatment and dietary recommendations for patients with vegetable allergies. The test is safe and minimally invasive, but it should only be ordered and interpreted by a qualified healthcare provider.