Trichologist Bromley: Which Blood Tests Actually Matter
Most people book hair appointments because of what they saw in the plughole that morning.
A trichologist Bromley appointment is most useful once you already have blood results in your hand. UK trichologists are hair and scalp specialists, not doctors, so they cannot order NHS blood work. Ask your GP for a full blood count, ferritin, thyroid function and vitamin B12 and folate first. Those four results tell you whether a deficiency is driving the shedding, or whether the answer lies in the hair itself.
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Key takeaways
- Trichologists in the UK are hair and scalp specialists, not medical doctors, and cannot order NHS blood tests for you.
- The four tests worth asking your GP about are full blood count, serum ferritin, thyroid function, and vitamin B12 and folate.
- NICE Clinical Knowledge Summaries put the iron deficiency cut off at a serum ferritin below 30 micrograms per litre.
- Ferritin rises with infection and inflammation, so a normal looking number is not always reassuring.
- Hair loss, hair shedding and hair breakage are three different problems and the blood tests only speak to one of them.
- Watermans products are cosmetic. They reduce breakage and support a healthy scalp environment, and they are not a substitute for blood work.
What does a trichologist Bromley appointment actually involve?
A trichology consultation is a structured interview plus a close look at the scalp, usually with a magnifier or a digital scope. The practitioner asks about family history, recent illness, medication changes, diet, periods and stress, then examines the hair at the roots across the parting, crown and hairline. Expect roughly forty five minutes for a first session.
What a trichologist cannot do is order NHS blood work or write a prescription. The Institute of Trichologists, the main UK register, lists members as hair and scalp specialists rather than clinicians. That distinction is the single most useful thing to understand before you spend money: the tests that answer most shedding questions are free from your GP, and a trichologist reads them rather than requests them.
Go in this order
Ask your GP for the blood tests first, wait for the results, then take a copy of them to the trichologist. Going the other way round usually means paying for a consultation that ends with the advice to go and get blood tests.
Which blood tests matter most when hair is shedding?
Four blood results carry most of the weight when hair is shedding: a full blood count, serum ferritin, thyroid function, and vitamin B12 with folate, and all four are available free from your GP in the UK.
A full blood count shows anaemia. Serum ferritin shows iron stores. Thyroid function shows whether an underactive or overactive thyroid is in play. Vitamin B12 and folate cover the other common deficiency anaemias. Between them they capture the causes that a simple change in habits can genuinely shift.
| Test | What it shows | Why it matters for hair |
|---|---|---|
| Full blood count | Anaemia and cell size | Anaemia is common in women with heavy periods and often sits behind diffuse shedding |
| Serum ferritin | Iron stores | Below 30 micrograms per litre confirms iron deficiency per NICE CKS |
| Thyroid function | TSH and thyroid hormones | The NHS lists hair changes among the symptoms of an underactive thyroid |
| B12 and folate | Other deficiency anaemias | Low levels are more common on restricted or plant based diets |
What does low ferritin actually do to hair?
Ferritin is the protein that stores iron, and it is the blood marker that tracks total body iron stores most reliably. NICE Clinical Knowledge Summaries state that a serum ferritin below 30 micrograms per litre confirms iron deficiency. When stores run down, the body prioritises red blood cells over hair follicles, and a proportion of follicles switch early into the resting phase.
There is an honest disagreement here worth knowing about. Many hair specialists work to a higher ferritin target, often quoted as 50 or 70 micrograms per litre, on the view that hair needs more iron than the anaemia threshold implies. That higher target is not settled in the guidance, so read it as clinical opinion. NICE also warns that ferritin readings are hard to interpret when infection or inflammation is present, because levels can look high even when iron is genuinely low.
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Is hair loss, hair shedding or hair breakage the real problem?
Hair loss, hair shedding and hair breakage are three separate problems with three separate answers, and blood tests speak clearly to only one of them, which is why the distinction is worth twenty seconds of thought before you spend money.
Hair loss means follicles producing finer hair or stopping, as in pattern hair loss or alopecia areata. Hair shedding means more hairs than usual completing their cycle and falling with the white bulb attached, which is telogen effluvium. Hair breakage means the fibre snapping along its length, so what you find is short broken pieces with no bulb. Losing roughly 50 to 100 hairs a day is normal, and only shedding pushes that count well above it.
- Hair loss shows as a widening parting or a thinning crown over months. Blood tests rarely explain it.
- Hair shedding comes on suddenly, usually two to three months after a trigger such as illness, surgery, childbirth or a crash diet. This is the one blood tests speak to.
- Hair breakage leaves short snapped fragments and rough ends. Heat, bleach, tight styling and friction are the usual culprits, not your bloods.
Losing somewhere around fifty to one hundred hairs a day is normal. If you are seeing far more than that and it started fairly abruptly, shedding is the likely pattern and a deficiency is worth ruling out. Our guide to why sudden shedding starts months after the trigger explains the timing in more detail.
What should you eat if your blood results come back low?
Food comes first and supplements second, and only for whatever actually came back low on the printout, because correcting a deficiency you do not have changes nothing about your hair and carries real risk with iron.
Red meat, liver, lentils, chickpeas, tofu, fortified breakfast cereals and dark leafy greens are the practical iron sources. Vitamin C at the same meal helps the plant sources absorb, while tea and coffee taken with food work against them. For B12, animal foods and fortified alternatives do the job. A newer name on the supplement shelf gets the same treatment in our guide to what the evidence really says about vitamin K2 for hair.
The point worth repeating is that none of this helps if nothing was low. Taking iron you do not need is not neutral, which is why the blood test comes before the supplement aisle. Our article on which nutritional deficiencies are genuinely linked to hair changes goes through the evidence for each nutrient.
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How long does it take for corrected blood results to show in your hair?
Corrected blood results show in the hair far more slowly than almost anyone expects, because hair grows at roughly one centimetre a month and the shedding rate settles months before any new length becomes visible in the mirror.
Hair grows around one centimetre a month, so even once a deficiency is corrected the new growth takes months to become visible length. Shedding usually calms within three to six months of the underlying level being put right, which is the first sign worth watching for. Length arrives long after that: at one centimetre a month, six months of clean growth is about six centimetres, barely past the ears on most people.
Track the shedding, not the mirror. Count or photograph what comes out on wash days, once a week, at the same point in the routine. A falling count is real progress even when the parting looks identical, and it is the measure a trichologist Bromley practitioner will ask you for at a follow up.
What can you do at home while you wait for results?
The most useful thing you can do while waiting on blood results is protect the hair already on your head, because breakage stacked on top of shedding makes the overall picture look considerably worse than the shedding alone would.
Hair that is shedding is also usually being handled roughly, and breakage on top of shedding makes the whole thing look worse than it is. Wide tooth comb on wet hair, lower heat, looser styling, and a conditioner used every wash all reduce the amount of hair that snaps before it would have fallen naturally.
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If you are in south east London and weighing up who to see, the same logic applies a few miles in any direction. Our guide to finding a trichologist in Lewisham covers the referral route in a neighbouring borough.
What are the frequently asked questions about seeing a trichologist Bromley?
What blood tests will a trichologist Bromley clinic ask for?
Most UK trichologists ask your GP for a full blood count, serum ferritin, thyroid function and vitamin B12 and folate. Those four cover the deficiencies and thyroid problems most often linked with diffuse shedding. Trichologists are not doctors and cannot order NHS blood work themselves, so the request goes through your GP.
Is a trichologist the same as a dermatologist?
No. A dermatologist is a medically qualified doctor who has specialised in skin, hair and nails. A trichologist studies hair and scalp science and is usually a private practitioner. Dermatologists can write medicine and order tests directly; trichologists work alongside your GP instead.
How low does ferritin have to be before it matters for hair?
NICE Clinical Knowledge Summaries say a serum ferritin below 30 micrograms per litre confirms iron deficiency. Many hair specialists take an interest well above that level, but the evidence for a specific hair threshold is weaker than the evidence for the anaemia cut off, so regard higher targets as opinion rather than settled fact.
How much does a private trichology consultation cost in the UK?
UK clinics commonly advertise an initial consultation somewhere between fifty and one hundred and fifty pounds, with follow ups costing less. Prices vary a great deal by city and by how long the first session runs, so check the clinic's own published fees before you commit.
Can diet alone fix hair that is shedding?
Only when a genuine deficiency is driving the shedding. If your ferritin, B12, folate and thyroid results are all normal, adding more iron rich food will not change your hair, and taking iron you do not need can cause harm. That is exactly why the blood work comes first.
How long before a corrected deficiency shows in the hair?
Hair grows roughly one centimetre a month, so visible change is slow. Shedding driven by a deficiency usually settles within three to six months of the level being corrected, and the length you can actually see takes longer still. Judge progress on how much hair comes out, not on length.
Do hair vitamins work if my blood results are normal?
If nothing is low, a supplement has nothing to correct. Watermans GrowPro gummies are a general nutritional support product for hair, skin and nails rather than something aimed at a deficiency, and they are not a substitute for blood work when you are shedding heavily.
Should I see a trichologist Bromley practitioner or my GP first?
See your GP first if the shedding is sudden, heavy or came with other symptoms such as tiredness, weight change or heavy periods. Your GP can arrange the blood tests free of charge. A trichologist Bromley appointment is most useful once you have those results in hand.
Sources & references
- NICE Clinical Knowledge Summaries, Anaemia: iron deficiency
- NHS, Iron deficiency anaemia
- NHS, Vitamin B12 or folate deficiency anaemia
- NHS, Underactive thyroid (hypothyroidism)
- NHS, Hair loss
- DermNet, Telogen effluvium
- The Institute of Trichologists
What is the bottom line on trichologist Bromley?
The bottom line on a trichologist Bromley visit is that the free blood work from your GP should come first, because those four results answer the question a paid consultation would otherwise send you away to go and ask.
A full blood count, ferritin, thyroid function and B12 and folate are free through your GP and they answer the question that a paid consultation would only send you away to ask. Take the printout to the trichologist Bromley practitioner you choose, and you turn a general conversation into a specific one. If your question is about products or a routine rather than a medical one, you can talk to Gail Waterman, our co-founder, as an AI avatar on the Watermans homepage.
While you wait, look after the hair you have. Watermans hair growth shampoo is a sulfate free daily cleanser that reduces breakage and supports a healthy scalp environment, so less hair snaps off before its time. Vegan, made in the UK, and over 6.5 million bottles sold since 2012.
Please note: Watermans products are 100% cosmetic and do not treat medical hair loss. Individual results may vary.
