From the Guidelines
Laboratory tests such as complete blood count (CBC), thyroid function tests (TSH, T3, T4), iron studies (ferritin, total iron binding capacity), vitamin D levels, and zinc levels can help identify the causes of hair breakage. These tests can reveal underlying conditions like thyroid disorders, anemia, or nutritional deficiencies that contribute to hair breakage.
Key Laboratory Tests
- Complete blood count (CBC) to check for anemia or other blood-related disorders 1
- Thyroid function tests (TSH, T3, T4) to check for thyroid disorders 1
- Iron studies (ferritin, total iron binding capacity) to check for iron deficiency, which can cause hair loss 1
- Vitamin D levels to check for vitamin D deficiency, which can contribute to hair loss
- Zinc levels to check for zinc deficiency, which can cause hair loss, as studies have shown that lower serum zinc levels are associated with alopecia areata 1
Additional Tests
Hormone panels may be ordered to check for conditions like PCOS or other hormonal imbalances affecting hair health 1. In some cases, scalp biopsies might be recommended to examine hair follicles directly. Hair mineral analysis can detect heavy metal toxicity or mineral imbalances.
Consultation
These tests should be discussed with a dermatologist or primary care physician who can determine which are most appropriate based on your specific symptoms, medical history, and physical examination findings.