What Blood Test Should Be Done for Hair Loss: Expert Guidance

Medically reviewed by Dr. Bilal Khan M.B.B.S.
Written by Our Editorial Team
Last updated

Experiencing hair loss can be distressing and disconcerting, often prompting the need for a thorough medical assessment. One crucial part of this examination is a series of blood tests. But exactly what blood test should be done for hair loss? We aim to answer this question comprehensively in this article.

What Blood Test Should Be Done For Hair Loss?

For an effective diagnosis of hair loss causes, several blood tests might be required. A Complete Blood Count (CBC) is typically one of the first tests done. This standard test checks levels of major cells in your blood, including red blood cells, white blood cells, and platelets. Apart from CBC, thyroid function tests, a test for testosterone, ANA, LH, FSH, and a lipid profile may also be advised. Furthermore, it's essential to conduct a ferritin test to check for iron levels, as iron deficiency can contribute to hair loss. Depending on the suspected underlying cause, additional tests may be required.

Understanding The Importance Of Blood Tests For Hair Loss

Blood tests play a pivotal role in diagnosing the root cause of hair loss, which can range from hormonal imbalances and nutritional deficiencies to more complex systemic diseases. An early and accurate diagnosis aids in forming an effective treatment plan to manage or potentially reverse hair loss.

Other Diagnostic Methods For Hair Loss

While blood tests form an integral part of the diagnostic process, they aren't the only method. Hair loss specialists may use hair loss density scales such as the Ludwig Scale and the Savin Scale. Furthermore, a physical exam of the scalp and hair may be conducted, and your doctor may inquire about your diet, hair care routine, and medical and family history. In some cases, a pull test might be done, where your doctor gently pulls several dozen hairs to see how many come out.

Treatment And Management Of Hair Loss

Treatment options for hair loss are available and often depend on the underlying cause. In some cases, like patchy hair loss (alopecia areata), hair may regrow without treatment within a year. Other common treatments include medications, surgery, and changes in hair care routines. Styling products that add volume, hair coloring, different hairstyles, wigs or extensions, or even shaving the head may be suggested to help you feel more comfortable with your appearance.


Understanding what blood test should be done for hair loss is a vital step towards managing and treating this condition. A series of blood tests, along with a thorough examination and understanding of your medical history, can lead to effective treatment plans. If you're experiencing hair loss, consult with a medical professional who can guide you on the necessary tests and treatment options for your unique situation.

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Dr. Bilal Khan M.B.B.S. graduated from the Jinnah Sindh University in Karachi. He'll take the official medical licensing program in the US (USMLE) in September 2023. Bilal has a passion for research and has extensively fact-check and medically review articles under his name to make sure you have the most accurate information.