Hair loss blood tests,
Harley Street, London.

Hair thinning and loss usually have an identifiable contributing cause. Our targeted panels, from nutritional screening to pre-transplant workups, help your clinician work out what is most likely driving yours.

Book Now → View all panels & pricing

Onsite laboratory: samples are processed in the same building within minutes of collection, never in external transit. Faster turnaround, no sample degradation, results you can trust.

Hair health panels

All panels include clinical review by a GMC-registered doctor. Same-day appointments at 134 Harley Street; turnaround varies by panel.

MOST POPULAR

Advanced Hair & Hormone Check

Our most popular hair panel. The core hair markers (iron studies, vitamin D, B12, full thyroid function and a full blood count) plus DHT, oestradiol, zinc and inflammatory markers, for patients who need more than the foundation workup.

  • Ferritin
  • Iron studies (iron status profile)
  • Vitamin D
  • Vitamin B12
  • Thyroid function (TSH, FT3, FT4)
  • Full blood count (FBC)
  • DHT (dihydrotestosterone)
  • Oestrogen (Oestradiol)
  • Zinc
  • CRP
  • ESR

⏱ Results are released as each marker is reviewed, rather than held back until the whole panel is complete. Most markers return within about 3 to 5 working days. DHT and oestradiol are among the slower ones, so the completion date for this panel is set by those rather than by the routine markers. We confirm the expected timeframe at booking.

Hair Loss Essentials

The foundation panel for anyone investigating hair loss or thinning. Covers the nutritional and thyroid markers most often implicated in reversible shedding, in line with the workup recommended by UK dermatology guidance.

  • Ferritin
  • Iron studies (iron status profile)
  • Vitamin D
  • Vitamin B12
  • Thyroid function (TSH, FT3, FT4)
  • Full blood count (FBC)
  • Folate
  • Zinc
  • CRP

⏱ Results are released as each marker is reviewed, rather than held back until the whole panel is complete. Most markers return within about 3 to 5 working days. We confirm the expected timeframe for your panel at booking.

£249 View panel →

Pre-Transplant Screening

Commonly requested before hair transplant surgery. Confirms medical fitness for the procedure and identifies factors that may affect outcome or healing.

  • Full blood count with platelets
  • Iron studies, including ferritin
  • Vitamin D & B12
  • Thyroid function (TSH, FT3, FT4)
  • Inflammatory markers (CRP, ESR)

⏱ Results are released as each marker is reviewed, rather than held back until the whole panel is complete. Most markers return within about 3 to 5 working days. We confirm the expected timeframe for your panel at booking.

£199 View panel →

Pre-Transplant + BBV Screen

The full Pre-Transplant Screening panel plus our complete BBV Screen (HIV, hepatitis B, hepatitis C and syphilis), often requested by UK and overseas hair transplant clinics before surgery.

  • Full blood count with platelets
  • Iron studies, including ferritin
  • Vitamin D & B12
  • Thyroid function (TSH, FT3, FT4)
  • Inflammatory markers (CRP, ESR)
  • HIV P24 antigen + antibody
  • Hepatitis C antibodies
  • Hepatitis B surface antigen
  • Syphilis antibodies

⏱ Results are released as each marker is reviewed, rather than held back until the whole panel is complete. Most markers return within about 3 to 5 working days. BBV serology is the slower component and sets the date a surgical team can work to, so book with that in mind rather than the routine markers. Urgent processing may be available on request and is confirmed at booking.

£309 View panel →

Scarring Alopecia Diagnostic

Specialist diagnostic for scarring alopecia: a scalp punch biopsy with full histopathology report. From £499; the price may vary if additional complexity is identified.

  • Scalp punch biopsy with histopathology report

⏱ Histopathology is reported by a consultant histopathologist, typically within about 7 to 10 days. We confirm the expected timeframe when the biopsy is taken.

From £499 View panel →

Same-day appointments usually available

Direct-access hair loss testing on Harley Street. No GP referral required.

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What blood tests can reveal

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Nutritional deficiencies

Low ferritin, iron, zinc, vitamin D, and B12 are among the most common, and most treatable, causes of hair loss.

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Hormonal imbalances

Excess DHT, elevated androgens, low oestrogen, and thyroid dysfunction all directly affect hair follicle health.

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Thyroid dysfunction

Both overactive and underactive thyroid can cause significant shedding. A wider panel (TSH plus free T4, free T3 and antibodies) gives more context than TSH alone.

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Autoimmune conditions

Scarring alopecias such as lichen planopilaris and frontal fibrosing alopecia typically need scalp biopsy to confirm. Alopecia areata is usually a clinical diagnosis but bloods help rule out coexisting autoimmune disease.

When to consider a hair loss blood test

A few hairs in the shower is normal. The signs that something more is going on are often subtle. Any one of the following is worth investigating.

More than 100 hairs a day in the shower

Especially if it has been happening for more than three months. Persistent shedding is a strong signal that something is driving it, and the work-up is the same first-line panel of iron, thyroid, vitamin D and B12.

A widening parting or thinning crown

Visible thinning at the parting in women or thinning at the crown in men is the typical pattern of androgenetic alopecia. The Hormone Specialist panel measures DHT and the wider androgen profile, useful for context alongside clinical assessment (serum DHT correlates poorly with severity on its own).

Hair loss after illness, surgery or pregnancy

Telogen effluvium typically appears two to four months after a major stressor. Ferritin and thyroid function are the highest-yield first tests, both included in Hair Loss Essentials.

Receding hairline in your 20s or 30s

Early-onset recession is typically androgen-driven and a clinical diagnosis. Bloods are useful before starting medication to rule out contributing nutritional or thyroid factors. The Advanced Hair & Hormone Check covers the relevant markers.

Failed response to finasteride or minoxidil

If you have been on treatment for six months without improvement, blood work can identify what else might be in play, often a nutritional or thyroid deficiency holding things back.

Scalp itching, redness or scarring

Patchy loss with visible scalp changes can indicate scarring alopecia (lichen planopilaris, FFA, CCCA), which needs a biopsy to confirm. See the Scarring Alopecia Diagnostic panel.

The most common reversible causes of hair loss

Many hair loss patients arrive having assumed the cause is genetic. The reality is that nutritional and thyroid causes contribute meaningfully in many cases, particularly in women, and are often correctable once identified.

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Low ferritin (iron stores)

One of the most common reversible causes of hair shedding in women. NICE CKS treats ferritin under 30 ug/L as iron deficient; some hair specialists target higher levels in active shedding, though the supporting evidence is limited. Usually corrected with diet, supplementation, or in some cases an iron infusion.

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Vitamin D deficiency

Common in UK winters and in patients with darker skin. Low vitamin D is associated with alopecia areata as well as diffuse hair thinning. Supplementation is straightforward once the level is known.

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Thyroid dysfunction

Both overactive (hyperthyroidism) and underactive (hypothyroidism) thyroid can cause significant hair shedding. TSH is the first-line screen under UK guidance; adding free T4, free T3 and thyroid antibodies can give a fuller picture in patients with symptoms despite a normal TSH.

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Recent illness, surgery or rapid weight loss

Telogen effluvium follows about three months after the trigger. Bloods rule out anything else in play, and the shedding usually resolves on its own within six to twelve months.

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High DHT in genetically susceptible people

The driver of male and female pattern hair loss. Measurable on the Hormone Specialist or Testosterone panels. Treatable with prescription medication once confirmed.

What happens after your results?

Your results are reviewed by a GMC-registered doctor who will flag any abnormalities, explain what they mean for your hair health, and outline clear next steps, whether supplementation, lifestyle changes, or further investigation.

Book your panel → Common questions

Need a marker not in these panels? Build a custom panel →

Treatment, after the bloods

DHT-driven loss? WMG Meds picks up where the panel leaves off.

If your panel shows a DHT or nutritional cause we can treat, our sister service WMG Meds dispenses prescription hair-loss medication under continued clinical supervision from GMC-registered doctors at the same Harley Street group. No second consultation. No referral letter. The clinician who reads your results can hand the plan straight over.

See WMG Meds plans & prices → Treatment costs, from £30

Also at WMG Health

Explore our other testing services

Private Hormone Testing

Testosterone, thyroid, DHT, oestrogen and adrenal markers.

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Private Health Screening

General wellness and preventative blood panels.

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HIV, Hepatitis & Syphilis Screen

Confidential BBV testing on Harley Street.

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