Understanding Lab Tests for Frequent Infections
Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Frequent infections can be a sign that your immune system isn't functioning at its best. While there isn't a single blood test to diagnose the tendency to get frequent infections, lab testing is fundamental for identifying underlying factors that may be compromising your immune response.
Recommended Test
Vitamin C
Vitamin C plays a crucial role in supporting immune system function by stimulating the production of white blood cells, which are essential for fighting infections. Low vitamin C levels may contribute to increased susceptibility to infections, making this test valuable for assessing one potential underlying cause of frequent illness.
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Why Blood Testing is Important for Frequent Infections
When you experience recurrent infections, healthcare providers often look for underlying causes such as nutritional deficiencies, immune system disorders, or other health conditions. Blood tests can reveal deficiencies in essential nutrients that support immune function, helping to identify potential contributing factors to your increased susceptibility to infections.
Understanding Your Results
If your vitamin C levels are found to be low, this could be one contributing factor to your frequent infections. However, it's important to work with a healthcare provider to evaluate all potential causes and develop a comprehensive treatment plan that may include dietary changes, supplementation, or further testing.
Important Considerations
The information here is for educational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider for diagnosis and treatment.
