What blood tests do dermatologists do for hair loss?

Author: Dr. Cecil Goodwin  |  Last update: Wednesday, January 28, 2026

Blood Test Required for Hair Loss They are Prolactin, Testosterone, DHEA, luteinizing hormone and follicular stimulating hormone.

Do dermatologists take blood tests for hair loss?

If your doctor suspects that an underlying medical condition may be the cause of hair loss, a blood test or scalp biopsy may be recommended. All of these diagnostic tests can be conducted in your dermatologist's office.

How do dermatologists treat hair thinning?

Your dermatologist will prescribe medication to help with hair loss. Topical minoxidil, commonly called Rogaine, can help with hair growth and thickness. In some cases, your doctor will prescribe Finasteride in oral form.

What hormone are you lacking if your hair is falling out?

Estrogen, androgens (other than DHT), thyroid hormones, insulin, and cortisol can all contribute to hair loss, some only in women and others in men and women.

How to fix hormonal imbalance hair loss?

How to Stop Hormonal Hair Loss?
  1. Topical minoxidil is an effective treatment for hormonal hair loss.
  2. To enhance the effects of minoxidil, low-level light therapy can be used.
  3. Injecting platelet-rich plasma into the affected regions of the scalp works to accelerate tissue repair and promotes hair regrowth.

BLOOD TESTS FOR HAIR LOSS :THE CRITICAL BLOOD TESTS YOU NEED NOW!

What does low estrogen hair loss look like?

The thinning may be more noticeable on areas like the front hairline, sides of the head, or top of the head. Though more shedding can occur, completely bald areas as a result of menopause are uncommon. Estrogen also affects production of scalp oil, called sebum. Less sebum leads to drier hair texture and a drier scalp.

What vitamins are tested for hair loss?

Common blood tests used to diagnose hair loss include the Complete Blood Picture (CBC), Iron Serum, TSH test, Ferritin Serum, Vitamin B12, Calcium Serum, and Vitamin D (25-Hydroxy). These tests help identify potential deficiencies or underlying health issues that may contribute to hair thinning or loss.

Does insurance cover dermatology for hair loss?

Unfortunately, in most cases hair loss treatments are not covered by insurance. Since hair loss doesn't affect your daily activity like a medical injury or illness would, it is considered a cosmetic procedure and not covered.

What does thyroid hair loss look like?

Severe and prolonged hypothyroidism and hyperthyroidism can cause loss of hair. The loss is diffuse and involves the entire scalp rather than discrete areas. The hair appears uniformly sparse.

What vitamin deficiency test for hair fall?

A vitamin deficiency test is a laboratory test to diagnose a micronutrient deficiency. Our body needs micronutrients, including vitamins and minerals. Even though we need only tiny quantities of these substances, they're critical for our health and well-being.

What thyroid tests should be done for hair loss?

What tests diagnose thyroid hair loss? Blood tests like TSH, T3, and T4 measure actual thyroid hormone levels. Thyroid antibody tests help diagnose autoimmune thyroid disorders, often underlying hair thinning. A physical exam also allows doctors to examine hair loss patterns and feel for thyroid enlargement.

What bloodwork should be done for hair loss?

Blood Test Required for Hair Loss

They are Prolactin, Testosterone, DHEA, luteinizing hormone and follicular stimulating hormone. This is another most important test which you can go for; they are T3, T4, and TSH. You should check the levels of these hormones.

What blood tests do dermatologists do?

Other blood tests
  • Renal, hepatic, thyroid and iron may be evaluated in patients with generalised pruritus, vasculitis or systemic symptoms.
  • Blood glucose and glycosylated haemoglobin detect and monitor diabetes, which may be of relevance in infection or skin diseases associated with metabolic syndrome.

Which deficiency causes hair fall?

Only riboflavin, biotin, folate, and vitamin B12 deficiencies have been associated with hair loss. Vitamin B2 (riboflavin) is a component of two important coenzymes: flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD) [22].

What can a dermatologist do for my thinning hair?

Your physician may recommend one or more of these treatments:
  • Rogaine® (minoxidil)
  • Topical corticosteroids.
  • Topical anthralin.
  • Topical immunotherapy.
  • Corticosteroid injections.
  • Propecia® (finasteride)
  • Oral immunosuppressants.

What is the best shampoo for hair loss?

Top shampoos for thinning hair, at a glance
  • Best Overall: Nizoral Anti-Dandruff Shampoo, $15.
  • Best for Thickening: Kérastase Densifique Thickening Shampoo, $44.
  • Best for Damaged Hair: Vegamour Hydr-8 Shampoo, $38.
  • Best for Volume: Bumble and Bumble Thickening Volume Shampoo, $37.

What is a full body check up for hair loss?

It includes complete blood count (CBC) to evaluates overall health, revealing potential anemia or infections that may contribute to hair fall; vitamin B12 and D (25-hydroxy) tests for assessing deficiencies essential for hair thickness and hair follicle strength; HbA1c test to detect diabetes or prediabetes, which can ...

What is the number one vitamin for hair loss?

Biotin remains commonly recommended by hair loss specialists at doses up to 5,000 mcg.

Why is my hair so thin I can see my scalp?

A visible scalp through your hair can be a sign that it's thinning (but not always). The factors that contribute to thinning hair (and thus a visible scalp) include stress, diet, vitamin deficiency and ageing.

How do I know if my hair loss is hormonal?

Unlike hair loss caused by chemotherapy or autoimmune disorders, hormonal hair loss is gradual. You might not notice it until your hairline has visibly receded, your ponytail has grown thinner, or your scalp has become visible.

Does Nutrafol really work?

Studies show that Nutrafol may improve hair growth, thickness, and shedding over time, but consistency is key - it typically takes at least three to six months to see results.

Does collagen help with hair loss?

Dietary supplementation with bioactive collagen peptides (CPs) may be a helpful adjuvant strategy in reducing the excessive hair shedding and thinning associated with aging or patterned hair loss.

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