Expert guidance from the doctors at Lambert Medical Practice — covering private GP care, blood testing, hormones, allergy testing, and more.
Everything you need to know about testosterone replacement therapy — symptoms of low T, testing, treatment options, and what GP-supervised TRT looks like at Lambert Medical Practice.
Read Full ArticleSeptember 2026 · Dr Raj Dhillon
Your iron deficit isn't a fixed number — it depends on your weight, haemoglobin, and how depleted your stores are. A GP explains the Ganzoni Formula and our free estimator tool.
Read moreSeptember 2026 · Dr Raj Dhillon
A ferritin of 12 µg/L sits right at the bottom of the normal range — but "within range" doesn't mean fine. A GP explains what it means, what symptoms to expect, and your treatment options.
Read moreSeptember 2026 · Dr Raj Dhillon
The answer isn't "two" — it's a calculation. A GP explains how the Ganzoni Formula determines your infusion count, with real patient examples across mild, moderate, and severe deficiency.
Read moreSeptember 2026 · Dr Raj Dhillon
Ferritin 8 is critically low and almost always requires more than oral supplements. A GP explains why this result warrants urgent attention and what to expect from an IV iron infusion.
Read moreSeptember 2026 · Dr Raj Dhillon
Fatigue, brain fog, hair loss, breathlessness — these aren't random. At ferritin 10 µg/L, your body is running critically low on iron. A GP breaks down every symptom and what to do next.
Read moreSeptember 2026 · Dr Raj Dhillon
Your GP says your blood count is fine, but your symptoms haven't shifted. A ferritin of 15 with normal Hb is the textbook definition of iron deficiency without anaemia — and it still needs treating.
Read moreSeptember 2026 · Dr Raj Dhillon
The Ganzoni Formula is how clinicians calculate exactly how much IV iron you need. A GP explains every variable, the most common calculation error (wrong target Hb), and four worked patient examples.
Read moreSeptember 2026 · Dr Raj Dhillon
Use our free dose estimator to calculate your total iron deficit and the number of IV infusion sessions needed — based on the Ganzoni Formula and your blood test results.
Read moreSeptember 2026 · Dr Raj Dhillon
Fatigue has many causes — most are identifiable from blood tests. A GP explains which tests to ask for, and what each one is looking for.
Read moreSeptember 2026 · Dr Raj Dhillon
Standard NHS blood tests often miss the causes of fatigue. Here's what they don't check — and what a comprehensive private panel includes.
Read moreSeptember 2026 · Dr Raj Dhillon
Iron, haemoglobin, vitamin D, thyroid — the blood tests that directly affect running performance and recovery, with targets for each.
Read moreSeptember 2026 · Dr Raj Dhillon
Testosterone, ferritin, cortisol, vitamin D — the 12 blood markers that directly influence strength, recovery, and body composition.
Read moreSeptember 2026 · Dr Raj Dhillon
Oestradiol, FSH, AMH, thyroid, ferritin and more — the 12 tests that give a comprehensive picture of health at 40 and beyond.
Read moreSeptember 2026 · Dr Raj Dhillon
Yes — switching testosterone preparations is possible and sometimes clinically indicated. A GP explains timing, how to bridge the gap, and what to expect.
Read moreSeptember 2026 · Dr Raj Dhillon
Total testosterone can be normal while free (active) testosterone is low. SHBG is usually the reason — here's what it means and how it's treated.
Read moreSeptember 2026 · Dr Raj Dhillon
Which blood tests you need before starting TRT, what's monitored during treatment, and when each test should be taken for accurate results.
Read moreSeptember 2026 · Dr Raj Dhillon
Supraphysiological testosterone causes specific, manageable problems. A GP explains the signs, the blood test thresholds, and what to do about it.
Read moreSeptember 2026 · Dr Raj Dhillon
Energy, libido, mood, strength — each responds at a different rate. A GP explains what changes when, and what to do if you're not seeing results.
Read moreSeptember 2026 · Dr Raj Dhillon
Faster rehydration, reduced muscle soreness, quicker return to training — how IV therapy accelerates recovery after a marathon or long-distance event.
Read moreSeptember 2026 · Dr Raj Dhillon
IV fluids rehydrate faster than drinking — but not everyone needs them. A GP explains who genuinely benefits and who doesn't need it.
Read moreSeptember 2026 · Dr Raj Dhillon
Oral vitamin C is absorbed up to a ceiling. IV vitamin C bypasses it entirely — delivering plasma concentrations 70 times higher. Here's when that matters.
Read moreSeptember 2026 · Dr Raj Dhillon
What's in a Myers Cocktail, what the evidence says, and who's most likely to benefit — from a GP who administers them.
Read moreSeptember 2026 · Dr Raj Dhillon
A GP gives an evidence-based answer: what energy IV drips can genuinely do, where the evidence is thin, and what patients actually feel.
Read moreSeptember 2026 · Dr Raj Dhillon
Wait times, appointment length, prescribing, referrals — an 8-point comparison of what private and NHS GP care actually deliver.
Read moreSeptember 2026 · Dr Raj Dhillon
Yes — same-day appointments are available. Here's how same-day private GP booking works and what you can get resolved in one appointment.
Read moreSeptember 2026 · Dr Raj Dhillon
Private GPs have full prescribing authority. Here's what that means in practice — including what NHS GPs commonly won't prescribe but private GPs can.
Read moreSeptember 2026 · Dr Raj Dhillon
Yes — private GPs refer to both NHS and private consultants, and can do so same-day. Here's how the referral pathway works.
Read moreSeptember 2026 · Dr Raj Dhillon
A private GP gives an honest answer: when private GP care is genuinely worth the cost — and when the NHS is the right choice.
Read moreSeptember 2026 · Dr Raj Dhillon
Not all year-round symptoms are hay fever. A GP explains the key differences between seasonal and perennial allergic rhinitis — and why it matters for treatment.
Read moreSeptember 2026 · Dr Raj Dhillon
Six reasons antihistamines stop working — from the wrong trigger to non-allergic rhinitis. A GP explains what to try next.
Read moreSeptember 2026 · Dr Raj Dhillon
Both measure IgE sensitisation — but they differ in breadth, convenience, and clinical utility. A direct comparison of the two approaches.
Read moreSeptember 2026 · Dr Raj Dhillon
ALEX3 analyses IgE sensitisation to over 300 allergens from a single blood draw — including molecular components. Here's exactly what's included.
Read moreSeptember 2026 · Dr Raj Dhillon
Yes — allergic inflammation disrupts sleep, activates the immune system continuously, and causes brain fog. Here's how to tell if your tiredness is allergic.
Read moreSeptember 2026 · Dr Raj Dhillon
Which blood tests you need before starting Mounjaro — for safety screening, identifying contraindications, and establishing a metabolic baseline.
Read moreSeptember 2026 · Dr Raj Dhillon
Fatigue during weight loss is common. The causes are usually nutritional — and most are easy to address with the right support.
Read moreSeptember 2026 · Dr Raj Dhillon
Baseline blood tests before weight loss injections aren't optional — they screen for contraindications and give you a metabolic baseline to measure progress against.
Read moreSeptember 2026 · Dr Raj Dhillon
When appetite is suppressed, protein is the nutritional variable that matters most. Here's how much you need and how to hit the target.
Read moreSeptember 2026 · Dr Raj Dhillon
Up to 40% of weight lost can be muscle without specific countermeasures. Here's why it happens and the steps that protect lean mass.
Read moreAugust 2026 · Dr Raj Dhillon
Single-dose Ferinject or two sessions of Venofer — does the preparation actually change the outcome? A private GP breaks down the evidence on safety, efficacy, and why smaller doses aren't inferior.
Read moreAugust 2026 · Dr Raj Dhillon
Chronic fatigue is rarely "just stress." Discover the 12 key blood tests that uncover the real cause of persistent tiredness — from ferritin to cortisol to hidden hormonal shifts.
Read moreAugust 2026 · Dr Raj Dhillon
Millions take iron tablets without feeling meaningfully better. A GP explains when an infusion is the better choice — and what our two-session protocol actually involves.
Read moreAugust 2026 · Dr Raj Dhillon
A GP cuts through the hype: who genuinely benefits from IV vitamin therapy, what the evidence says, and when it makes clinical sense to go beyond oral supplements.
Read moreAugust 2026 · Dr Raj Dhillon
Most patients focus on the cost. The smarter question is: what's the cost of not having it? A frank look at what private GP membership actually gives you.
Read moreAugust 2026 · Dr Raj Dhillon
Most serious conditions develop silently for years. Annual screening catches cardiovascular risk, blood sugar, hormones, and nutrient deficiencies while they're still easy to treat.
Read moreJune 2026 · Lambert Medical Clinical Team
No 3-week NHS wait, no referral needed. A private GP explains how same-day access works, what you can be seen for, and how on-site blood tests get results in 48 hours.
Read moreJune 2026 · Lambert Medical Clinical Team
Conventional tests tell you what you may be allergic to. Molecular testing tells you why — and whether the reaction is genuinely dangerous or just cross-reactive noise.
Read moreJune 2026 · Lambert Medical Clinical Team
All three deliver oestrogen but differ in clot risk, hormone stability, and convenience. A private GP compares the options so you can make an informed choice.
Read moreJune 2026 · Lambert Medical Clinical Team
Irregular periods, excess hair, or acne? A GP explains which hormone tests diagnose PCOS, what the Rotterdam criteria are, and why "normal" doesn't always rule it out.
Read moreJune 2026 · Lambert Medical Clinical Team
Safe TRT requires regular monitoring. A GP explains which tests you need, how often, what PSA and haematocrit thresholds mean, and when to draw blood relative to your dose.
Read moreJune 2026 · Lambert Medical Clinical Team
When hay fever spreads beyond pollen season or antihistamines stop working, you need a different approach. A GP explains polysensitisation, perennial rhinitis, and what to investigate.
Read moreJune 2026 · Lambert Medical Clinical Team
Skin prick, specific IgE blood test, or molecular allergy testing? A private GP explains the differences and when each type is the right choice.
Read moreJune 2026 · Dr Caroline Fontana
Struggling despite eating well and exercising? Declining oestrogen, testosterone, and insulin resistance — not willpower — may be the real reason. A specialist GP explains.
Read moreJune 2026
Tamoxifen only works if your CYP2D6 gene converts it into its active form. Poor metabolisers may face higher recurrence risk. International guidelines recommend testing before starting treatment.
Read moreJune 2026
Up to 10% of people can't convert codeine into morphine due to the CYP2D6 gene. For others it's dangerously fast. A PGx test identifies your type so your GP can prescribe what actually works.
Read moreJune 2026
A simple blood test now detects Alzheimer's amyloid pathology with over 90% accuracy. No lumbar puncture, no PET scan. A GP explains the science and why early detection matters more than ever in 2026.
Read moreMaio 2026
Ozempic, Wegovy e Mounjaro explicados em português — como funcionam, análises necessárias, efeitos secundários e o que fazer quando se para o tratamento.
Ler maisMaio 2026
Guia completo em português sobre BPC-157 e TB-500 — mecanismos, evidência clínica, dosagem, análises de sangue e estatuto legal no Reino Unido.
Ler maisMay 2026
How GH-releasing peptides stimulate your pituitary to restore youthful GH pulses — the complete guide including dosing, blood tests, and comparison with synthetic HGH.
Read moreMay 2026
BPC-157 is one of the most studied peptides in regenerative medicine. This guide covers mechanisms, evidence, dosing, blood test monitoring, and legal status in the UK.
Read moreMaio 2026
Policitémia, infertilidade, risco cardíaco, virilização — o que acontece quando os níveis de testosterona estão demasiado elevados e como monitorizar com segurança.
Ler maisMaio 2026
Parou o Mounjaro ou Wegovy? Este guia em português explica as análises essenciais, como evitar recuperar o peso e reconstruir músculo e osso.
Ler maisMay 2026
GLP-1 drugs cause significant lean mass and bone density loss. Here's the medical protocol for rebuilding strength, muscle and metabolic health once you stop.
Read moreMay 2026
Your ALEX3 report shows IgE class 0–6 across 295 allergens. This guide explains what each class means, sensitisation vs. true allergy, and your next steps.
Read moreMay 2026
A detailed comparison of all three allergy testing methods — accuracy, cost, what each detects, and which test is right for your symptoms.
Read moreMay 2026
Detailed comparison of all three TRT options — injections, long-acting Nebido, and daily Testogel. Pricing, pros, cons and who each option suits.
Read moreMay 2026
The 10 key early symptoms of perimenopause, which hormone tests to request, and when to consider HRT — explained for women in their late 30s and 40s.
Read moreMaio 2026
Guia completo em português sobre perimenopausa, menopausa, HRT e exames hormonais femininos. Para a comunidade portuguesa e brasileira em Surbiton e Kingston.
Ler maisMay 2026
Private sports injury assessments for Surrey athletes. Same-week appointments for muscle, joint, and tendon injuries — with rapid imaging referral if needed.
Read moreMay 2026
Private employee health checks and executive medicals for businesses in Surrey and Kingston. Flexible clinic or on-site options with same-week availability.
Read moreMarch 2026
Everything men over 50 need to know about the PSA blood test — what it measures, what a raised result means, and when private prostate screening makes sense.
Read moreFebruary 2026
PCOS affects 1 in 10 women; endometriosis affects 1 in 9. We explain both conditions, how they're diagnosed, and what private treatment looks like in Surrey.
Read moreMarch 2026
Thyroid, iron, vitamin D, B12, cortisol and hormones — the tests that reveal why you're always tired and what to do about it.
Read moreMarch 2026
Fatigue, low libido, weight gain, brain fog — could it be low testosterone? 10 warning signs and how to get tested in the UK.
Read moreMarch 2026
Not sure which is right? We explain the difference between a health check and a GP consultation — and when you might benefit from both.
Read moreMarch 2026
Waiting times, referral access, appointment length, and cost — we compare private GP and NHS care across 10 key areas so you can make the right choice for your health.
Read moreMarch 2026
Transparent pricing breakdown for private GP consultations in Surrey — comparing Lambert Medical, VR Clinics, Nuffield, and others. From £65.98 at Lambert.
Read moreMarch 2026
PHE recommends 400 IU daily for all adults over 65, but NHS prescribing criteria are strict. We explain why tablets often fail older adults and when a private Vitamin D injection (£50) makes clinical sense.
Read moreMarch 2026
B12 tablets absorb at just 1–5%. Glutathione breaks down in the gut. NAD+ is 10–25% effective orally. We compare every vitamin by bioavailability and explain when injections are clinically superior.
Read moreMarch 2026
The most comprehensive allergy blood test available. We explain what ALEX3 tests for, how it differs from skin prick tests, and why it's the gold standard for allergy diagnosis.
Read moreMarch 2026
Struggling with severe hayfever every summer? We explain how the hayfever injection (Kenalog) works, who it's suitable for, the risks, and alternatives available at our Surbiton clinic.
Read moreJanuary 2025
Symptoms of low testosterone, testing protocols, treatment options, and what GP-supervised TRT looks like at Lambert Medical Practice.
Read moreJanuary 2025
A comprehensive guide to hormone replacement therapy for women — symptoms to treat, types of HRT, risks and benefits, and how to access it privately in Surrey.
Read moreMarch 2026
Our Women's Hormone MOT covers oestrogen, progesterone, testosterone, thyroid, cortisol and more. Find out what a full hormonal panel reveals and how it can transform your health.
Read moreDecember 2024
How a comprehensive hormonal MOT can identify imbalances affecting energy, mood, weight and libido — for both men and women in midlife.
Read moreMarch 2026
Planning to fly with a medical condition, late pregnancy, or recent surgery? We explain what airlines require, what a fit to fly certificate includes, and how to get one quickly in Surbiton.
Read moreNovember 2024
How artificial intelligence is revolutionising blood test interpretation — identifying patterns, predicting risk, and enabling genuinely personalised preventive care.
Read moreOctober 2024
Why busy professionals need regular comprehensive health screening — what's included, what it reveals, and why catching issues early is always better than treating them late.
Read moreMarch 2026
GLP-1 weight loss injections are transforming obesity treatment. We compare Mounjaro (tirzepatide) and Wegovy (semaglutide), explain eligibility, and discuss what GP-supervised treatment involves.
Read moreOctober 2024
Home finger prick kits are convenient, but how do they compare to clinic-based venous blood draws? We break down the accuracy differences and when each method is appropriate.
Read moreSeptember 2024
A health MOT is one of the most valuable things you can do for your long-term wellbeing. We explain what's included, what conditions it can detect, and how to book one in Surbiton.
Read moreAugust 2024
From hangover recovery to athletic performance and skin health — we examine the evidence behind IV vitamin drips and what to expect from a clinic-administered IV infusion.
Read moreAugust 2024
NAD+ is one of the most researched longevity molecules. We examine the published evidence for NAD+ supplementation, IV therapy, and why it matters for cellular energy and ageing.
Read moreJuly 2024
With NHS waiting times at record highs, more Surrey residents are turning to private GP appointments. We look at the benefits, costs, and what to expect from same-day private GP care.
Read moreFebruary 2026
Testosterone supplements, D-aspartic acid, ashwagandha — do natural boosters actually raise testosterone? We compare natural approaches to GP-supervised TRT with the clinical evidence.
Read moreSpeak to one of our experienced GPs. Same-day appointments available at our Surbiton clinic.