Private Blood Tests in London: Same-Day Appointments, Fast Results, Doctor-Interpreted
The Online GP by The Wellness offers private blood testing at our Marylebone clinic with same-day appointments, fast results (most within 24–48 hours), and every result interpreted by a GMC-registered doctor. No NHS referral is required. Whether you want a comprehensive health screen, need specific markers tested, or have symptoms you want investigated, our doctors can recommend the right panel and explain your results in plain language. We do not send you a raw laboratory report and leave you to Google it — every result comes with a doctor's interpretation and clear next steps.
Book a Blood Test — WhatsApp → | Email: team@thewellnesslondon.com
Why Private Blood Testing Matters
The NHS blood testing pathway is designed for clinical necessity, not convenience or proactive health management. If your NHS GP orders a blood test, you may wait days for the phlebotomy appointment, then wait again for results, then wait for a follow-up appointment to discuss them. The total process can stretch to three or four weeks. If the test is not deemed clinically necessary, your GP may decline to order it at all. Private blood testing puts you in control. You decide what gets tested and when. You receive results in days, not weeks. And a doctor explains them to you — in context, in plain language, with clear recommendations. At The Online GP by The Wellness, our approach goes further than most private blood test providers. Many services offer phlebotomy and results but leave interpretation to you. Others provide automated "traffic light" reports that flag numbers as red, amber, or green without clinical context. We believe blood test results without doctor interpretation are incomplete at best and anxiety-inducing at worst. A slightly elevated liver enzyme might mean nothing — or it might warrant investigation. Only a doctor who knows your history can tell you which.
What We Test
Our Marylebone clinic offers a comprehensive range of blood tests tailored to your needs. General health panels cover the markers that give an overall picture of your health: full blood count (red cells, white cells, platelets), liver function (ALT, AST, ALP, bilirubin, albumin, GGT), kidney function (creatinine, urea, eGFR, electrolytes), lipid profile (total cholesterol, HDL, LDL, triglycerides), diabetes markers (HbA1c, fasting glucose), inflammatory markers (CRP, ESR), and iron studies (ferritin, iron, TIBC). Thyroid function — TSH, free T3, free T4, and thyroid antibodies if indicated. Essential for investigating fatigue, weight changes, hair loss, and mood disturbances. Vitamin and mineral profiles — vitamin D, vitamin B12, folate, magnesium, zinc, and others. Deficiencies are common and often cause vague symptoms like tiredness, brain fog, and muscle weakness that are easily dismissed. Hormone panels — testosterone (total and free), oestrogen, progesterone, LH, FSH, DHEA-S, cortisol, prolactin, and SHBG. Available for both men and women. Essential for investigating fertility concerns, menstrual irregularities, low libido, fatigue, and hormonal imbalance. Sexual health screening — HIV, hepatitis B and C, syphilis, chlamydia, gonorrhoea, and others. Confidential, fast, and available as part of a GP consultation or as a standalone service. Cancer markers — PSA (prostate), CA-125 (ovarian), CEA (bowel), and others. These are screening tools, not diagnostic tests, and your doctor will explain their limitations as well as their value. Allergy testing — specific IgE panels for common allergens including foods, environmental triggers, and drug allergies. Bespoke panels — if you have specific concerns or have read about a particular marker, our doctors can create a tailored panel that tests exactly what you want investigated.
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The Process: From Booking to Results
Step 1: Contact us. WhatsApp, email, or call. Tell us what you want tested or describe your symptoms, and we will recommend the appropriate panel. If you are unsure, book a GP consultation first and the doctor will guide you. Step 2: Attend your appointment. Same-day bookings are available at our Marylebone clinic. A trained phlebotomist or doctor takes your blood sample. The process takes approximately 5–10 minutes. Some tests require fasting — we will advise when you book. Step 3: Laboratory analysis. Your sample is sent to an accredited UK laboratory. Most routine results are returned within 24–48 hours. Specialised tests may take 3–5 working days. Step 4: Doctor interpretation. A GMC-registered doctor reviews your results, cross-references them with your medical history and symptoms, and prepares a clear explanation. Step 5: Results communication. Your doctor contacts you to discuss your results — by phone, video, or in person. You receive a clear explanation of what each result means, whether anything is abnormal, and what (if anything) needs to happen next. If further investigation, treatment, or specialist referral is needed, your doctor arranges it.
The Executive Body Scan: Our Most Comprehensive Health Assessment
For patients who want the most thorough possible picture of their health, our Executive Body Scan at £695 combines an extensive blood panel with on-site ultrasound, cardiovascular assessment, and a detailed GP consultation. This is not a quick health MOT. It is a comprehensive, doctor-led assessment that takes time, asks the right questions, and investigates properly. It covers a detailed medical history and lifestyle review, comprehensive blood work (typically 40+ markers), on-site ultrasound scanning, blood pressure and cardiovascular assessment, body composition analysis, and a personalised health report with specific recommendations. Many patients book the Executive Body Scan as an annual health check — a proactive approach to identifying issues before they become problems. Others book it because they have vague symptoms (persistent tiredness, unexplained weight changes, general malaise) that their NHS GP has not been able to investigate thoroughly within the constraints of a 10-minute appointment.
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On-Site Ultrasound: Imaging Without the NHS Wait
In addition to blood testing, our Marylebone clinic offers on-site ultrasound scanning from £175, with same-day results interpreted by a qualified doctor. Available scans include abdominal (liver, gallbladder, kidneys, pancreas, spleen), pelvic (uterus, ovaries, bladder), renal and urinary tract, thyroid, musculoskeletal (joints, tendons, soft tissue), and early pregnancy dating scans. On the NHS, an ultrasound referral can take weeks to months. At The Online GP by The Wellness, you can often have a scan on the same day as your consultation, with results explained before you leave the clinic. That is the difference integrated private care makes.
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Frequently Asked Questions
Where can I get a private blood test in London? The Online GP by The Wellness, Marylebone. Same-day appointments available. WhatsApp us on +44 7961 280835.
How fast do results come back? Most routine panels within 24–48 hours. Specialised tests 3–5 working days.
Do I need a referral? No. Book directly with us. No NHS GP referral required.
Will a doctor explain my results? Yes. Every result is reviewed and explained by a GMC-registered doctor. You never receive a raw report without interpretation.
Do I need to fast? For some tests (fasting glucose, lipid profile). We advise when you book. Most panels do not require fasting.
Can I get a blood test today? Yes, if you contact us before midday. Same-day appointments are available most days.
What is the Executive Body Scan? Our most comprehensive health assessment at £695 — extensive blood work, ultrasound, cardiovascular checks, and a detailed doctor consultation with personalised recommendations.
The Online GP by The Wellness provides private doctor-led healthcare from our Marylebone clinic. Contact us on WhatsApp at +44 7961 280835, email team@thewellnesslondon.com, or call 020 3951 3429.
References
NHS Digital. GP Patient Survey 2025 — diagnostic waiting times. 2025.
BMA. Pressures in general practice. Updated 2026.
CQC. Independent doctor and clinic services. 2025
