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Biochemical Testing of the Thyroid: TSH Is the Best and Often Only Test Needed – A Review for Primary Care

research Biochemical Testing of the Thyroid: TSH is the Best and, Oftentimes, Only Test Needed – A Review for Primary Care

115 citations , May 2016 in “Clinical Medicine & Research”

This review discusses the complexities of interpreting thyroid function tests, highlighting the challenges primary care providers face due to patient demand and misinformation, but reports no new results.

research The Role of Micronutrients and Thyroid Function Tests in Pediatric Hair Loss

September 2025 in “Online Türk Sağlık Bilimleri Dergisi”

This study observed that pediatric patients with diffuse, non-scarring alopecia had significantly lower levels of zinc and folate compared to matched healthy controls, suggesting a possible link between these deficiencies and hair loss in children.

research Abstract #1182315: Biotin and thyroid function test

May 2022 in “Endocrine practice”

This case report illustrates that high-dose biotin supplementation can cause false thyroid function test abnormalities in vitro, emphasizing the need to assess biotin intake before testing.

Thyroid Hormones and Androgens Differentially Regulate Gene Expression in Testes and Ovaries of Sexually Mature Silurana Tropicalis

research Thyroid hormones and androgens differentially regulate gene expression in testes and ovaries of sexually mature Silurana tropicalis

13 citations , July 2018 in “General and comparative endocrinology”

This study observed that direct exposure to androgens in Western clawed frogs differentially affects thyroid receptor and deiodinase gene expression in male and female tissues, offering insight into sex-specific metabolic pathway activation.

The Prevalence of Thyroid Function Test Abnormalities and Serum Thyroid Autoantibodies in Vitiligo and Alopecia Areata Patients in the Saudi Arabian Population

research The prevalence of thyroid function test abnormalities and serum thyroid autoantibodies in vitiligo and alopecia areata patients in Saudi Arabian population

February 2024 in “International Journal of Research in Dermatology”

In this study, researchers examined thyroid function and autoantibody levels in patients with alopecia areata and vitiligo, finding similar rates of thyroid dysfunction and autoantibody presence in both groups, with no significant differences based on ethnicity or gender.

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community I got my blood test results, my Thyroid and Ferritin are good but Vitamin D is 11.1 I started topic minoxidil yesterday (5%)

in Treatment 5 upvotes 5 months ago

The user has androgenetic alopecia (AGA) and low Vitamin D levels, and they started using topical minoxidil (5%). They are considering finasteride but are concerned about side effects and are advised to seek mental health support.

community [35 M] Hair thinning all over body. Testosterone, Thyroid, Vitamins all normal. What could be wrong?

4 upvotes 10 years ago

A 35-year-old male experiences rapid hair loss on his head and body despite normal test results for testosterone, thyroid, and vitamins. He previously used topical minoxidil and retinol, and doctors have been consulted without finding a clear cause.

community What Private blood test should I take?

9 upvotes 2 years ago

A user in the UK seeks advice on blood tests before starting Finasteride and Minoxidil for hair loss. Recommended tests include thyroid function, hormone levels, liver and kidney function, and vitamin and mineral levels.

community What blood results (if any) could be affected by Fin/Min?

in Finasteride/Dutasteride 2 upvotes 1 year ago

Finasteride can increase total testosterone and potentially raise estrogen levels, leading to side effects. Biotin in combined tablets can falsely elevate thyroid hormone levels in blood tests.

community Important blood values on Dut?

7 upvotes 9 months ago

The conversation is about a user planning a blood test to monitor health while on hair loss treatments: Finasteride, Minoxidil, and Dutasteride. Recommendations include testing for androgens, thyroid function, micronutrients, and basic health markers, with additional suggestions for PSA, prolactin, and estradiol.

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Hair Transplant
Wellness Medical Clinic & Thyroid Treatment CenterDiamond Bar, CA · US

Experts

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Hair Loss Specialist
Dr. Fernando Testi, MD
Benissa, Comunitat Valenciana, Spain

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Dr. Fernando Testi, MD