1,25-dihydroxyvitamin D (calcitriol)
This test measures 1,25-dihydroxyvitamin D, the biologically active form of vitamin D. It is used to investigate calcium imbalance, kidney disease and...
Preparing for a hair transplant or struggling with thinning? This profile checks common internal factors that can drive shedding and affect healing.
Turnaround time
2-3 days
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SelectedThe Hair Transplant Profile is a combined blood test panel designed to look for common, treatable medical factors that can contribute to hair shedding, slow regrowth, or sub-optimal transplant outcomes.
Rather than focusing on one marker, it checks key health “buckets” that matter for hair:
General blood health (to spot signs that may affect oxygen delivery and recovery)
Iron status (a frequent factor in diffuse shedding)
Vitamins and minerals linked to hair quality
Thyroid health (because thyroid imbalance can trigger shedding)
Hormonal health (because hormone imbalance can influence scalp hair cycling)
Hair loss isn’t always “just genetics.” Even when androgenetic hair loss is the main driver, correctable issues (like low iron stores, thyroid imbalance, or nutritional insufficiency) can sit in the background and worsen shedding, increase breakage, or make results look less impressive.
If you’re planning a transplant, this profile helps you optimise the conditions your follicles are working in-before grafts are placed and during recovery. Many clinics focus on the procedure itself, but your body still has to do the hard part: healing, supporting new growth, and stabilising underlying shedding so you don’t continue losing surrounding hair.
You may also want this profile if you’re not 100% sure what’s causing your hair changes. Hair shedding can be triggered by stress, illness, postpartum shifts, restrictive dieting, heavy periods, thyroid disorders, and certain medications-sometimes all at once. A structured blood panel helps you move from guesswork to actionable next steps.
Common symptoms / reasons to test may include:
Increased hair shedding (more hair in the shower/brush)
Thinning at the crown or widening parting
Receding hairline (especially with rapid progression)
Dry, brittle hair or increased breakage
Fatigue, low energy, brain fog
Cold intolerance, constipation, or unexplained weight change
Heavy periods or irregular cycles
Acne, increased facial hair, or symptoms of hormonal imbalance
Slow wound healing or frequent infections
Hair loss after stress, illness, surgery, or pregnancy
Identifies hidden contributors to shedding
Even mild imbalances can influence hair cycling and increase the “shed phase.”
Supports better transplant planning
Optimising internal factors beforehand can help you go into the procedure in the best possible baseline state.
Helps reduce avoidable disappointment
If shedding is driven by a correctable issue, fixing it can improve how your hair looks and feels-transplant or not.
Creates a clear starting point (baseline)
You can track changes over time and see whether interventions are actually working.
Improves targeting of supplementation
Instead of blanket supplements, you can focus on what you truly need (and avoid unnecessary ones).
Flags thyroid-related patterns early
Thyroid imbalance is a common, often-missed cause of diffuse hair loss and texture change.
Assesses hormonal influences on hair
Helpful if hair loss comes with cycle changes, acne, or other endocrine symptoms.
Supports overall health, not just hair
Many of the same issues that affect hair also impact energy, mood, and wellbeing-so improvements often have wider benefits.
Choose your nearest UK clinic and book an appointment.
Attend the clinic - a clinician will take your blood sample.
Wait for results (fast and standard options may be available depending on the package you select).
Prefer not to travel?
4) Add £60 and a mobile phlebotomist can come to your home or hotel to take the sample. Both clinic and mobile services are UK-wide.
Your report will show each part of the profile as low, balanced, or elevated (based on UK laboratory reference intervals for that specific test). Because this is a profile, “low/balanced/elevated” can apply to different areas-blood health, iron status, vitamins/minerals, thyroid, or hormones-each with its own meaning.
A “low” result typically suggests your level is below the expected range for that marker. Depending on what’s low, it may be linked to:
Reduced support for normal hair growth and follicle cycling
Increased likelihood of diffuse shedding (especially when iron stores or key nutrients are low)
Symptoms like fatigue, low stamina, low mood, or brittle hair
What usually happens next: confirm whether it’s a true deficiency vs a temporary fluctuation, review diet/supplements/medications, and consider re-testing after a period of targeted changes. For some findings (especially thyroid patterns), you may need GP review.
“Balanced” means the result sits within the expected reference range for that test. This is reassuring, but it doesn’t always rule out hair loss-because hair thinning can still be driven by:
Genetics (androgenetic alopecia)
Recent stress/illness (telogen effluvium)
Scalp conditions (seborrhoeic dermatitis, psoriasis)
Lifestyle factors (sleep, protein intake, weight loss, smoking)
What usually happens next: if your profile is balanced but hair loss continues, the next best step is often a clinical hair/scalp assessment and a plan focused on the most likely cause (with monitoring).
An “elevated” result means your level is above the expected range for that marker. Depending on what’s elevated, it can reflect:
Inflammation or physiological stress
Hormonal patterns that may affect hair cycling
Thyroid patterns that can contribute to shedding
Occasionally, over-supplementation (some vitamins/minerals can rise if doses are high)
What usually happens next: interpret the finding in context (symptoms, medications, supplements, timing), and decide whether it needs repeat testing, dose adjustment, or medical review.
Simple steps to get your results
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsFollow these guidelines for accurate results
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.
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