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GlossaryThyroid Function Tests

measure thyroid hormone levels to assess gland performance

Thyroid Function Tests (TFTs) are a series of blood tests used to evaluate how well the thyroid gland is working. These tests typically measure levels of thyroid hormones such as Thyroxine (T4), Triiodothyronine (T3), and Thyroid-Stimulating Hormone (TSH). Abnormal levels can indicate conditions like hypothyroidism or hyperthyroidism, which can affect various bodily functions, including metabolism and hair growth.

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research A Hospital-Based Cross-Sectional Study Evaluating Hemoglobin, Iron Profile, and Thyroid Function Tests in Women with Telogen Effluvium, Female Pattern Hair Loss, and Alopecia Areata

1 citations , April 2021 in “Nepal journal of dermatology, venereology & leprology”

Iron profile tests are recommended for women with hair loss, as haemoglobin levels alone are not reliable.

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

September 2025 in “Online Türk Sağlık Bilimleri Dergisi”

Low zinc and folate levels are linked to hair loss in children.

research Biotin and Thyroid Function Test: A Case Study

May 2022 in “Endocrine practice”

High-dose biotin can cause false thyroid test results; stop taking biotin two days before testing to avoid errors.

A Comprehensive Investigation of Biochemical Status in Patients with Telogen Effluvium: Analysis of Hb, Ferritin, Vitamin B12, Vitamin D, Thyroid Function Tests, Zinc, Copper, Biotin, and Selenium Levels

research A Comprehensive Investigation of Biochemical Status in Patients with Telogen Effluvium: Analysis of Hb, Ferritin, Vitamin B12, Vitamin D, Thyroid Function Tests, Zinc, Copper, Biotin, and Selenium Levels

August 2024 in “Journal of Cosmetic Dermatology”

Telogen effluvium is linked to deficiencies in iron, vitamin B12, and thyroid function.

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

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

TSH is usually the only test needed to check thyroid function in primary care.

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community What Private blood test should I take?

in Finasteride/Dutasteride 8 upvotes 1 year 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 Female, 27 years old, shedding/ balding despite being on what is considered to be a effective treatment plan for AGA. Considering Dut (oral) . Please help.

in Finasteride/Dutasteride 27 upvotes 11 months ago

A 27-year-old woman with androgenic alopecia is losing hair despite using oral minoxidil and spironolactone, and is considering dutasteride. She is exploring causes like stress and medication side effects, planning tests, and considering treatment changes.

community C’est terrible - at my wits end

in Female 450 upvotes 1 year ago

A 29-year-old woman is experiencing gradual hair thinning since age 15, suspects Androgenic Alopecia, and has tried 5% minoxidil with little success. She has purchased various hair loss treatments including minoxidil, dutasteride, finasteride, and spironolactone, but is cautious about starting them due to potential interactions with her ADHD medication.

community MY Hair Loss Treatment Summary

in Treatment 9 upvotes 1 year ago

The conversation is about various hair loss treatments, including finasteride, minoxidil, RU58841, and natural supplements like saw palmetto and pumpkin seed oil. It also covers methods to improve blood circulation, nourish hair follicles, and address underlying health issues like vitamin D deficiency and high cortisol levels.

community Just found a little hard lump under my left nipple, it’s over

in Finasteride/Dutasteride 12 upvotes 1 year ago

A user experienced a hard lump under their nipple and increased hair loss after four months of finasteride. They are concerned about the lump and plan to stop the treatment.

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