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KnowYou+

Hair Health Blood Test

At-home blood test

Prepaid tracked return · Processed by a CQC-regulated laboratory.

A broader look at key nutrients and thyroid hormones that may be relevant to hair thinning, shedding and hair health.

Want to understand whether common nutritional or thyroid factors could be relevant to changes in your hair?

The KnowYou+ Hair Health Blood Test checks 7 important blood markers linked with nutrients, iron stores and thyroid function.

It measures ferritin, vitamin B12, folate and vitamin D, together with three thyroid markers.

These results may help give you a broader picture if you are experiencing hair thinning or shedding, or simply want to understand some of the health factors that can be associated with hair growth and hair condition.

Important: Hair loss can have many different causes. This blood test provides information about the markers measured but cannot diagnose the cause of hair loss or another medical condition.

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For adults who want to understand some of the nutritional and thyroid-related factors that may be relevant to hair thinning, shedding or changes in hair health.

This test measures 6 key hormones linked to menstrual cycle and reproductive health:

  • FSH — Follicle-Stimulating Hormone
  • LH — Luteinising Hormone
  • Prolactin
  • Testosterone
  • Oestradiol
  • Progesterone

Together, these provide a broader picture of hormone patterns and reproductive health.

Follow the collection instructions provided with your kit. If you take medication or treatment that may affect your thyroid or vitamin levels, follow any guidance provided by your healthcare professional or laboratory.

Collect your sample at home, return it using the prepaid packaging provided, and receive your laboratory result securely

Everything you need to collect and return your sample, including collection materials, instructions and prepaid return packaging.