BLOOD TESTS
Private GP Blood Tests — When Are They Needed?
How blood tests fit into a private GP consultation, when they are clinically useful, and why GP oversight matters when interpreting results.
Blood tests are one of the most common next steps after a private GP consultation. They can help clarify symptoms, exclude underlying conditions, monitor existing treatment, or provide a baseline for preventive health review. But they are most useful when requested for a clinical reason and interpreted in context by a GP who understands your symptoms and history.
The difference between a helpful blood test and a confusing one often comes down to whether the right tests were selected and whether someone took the time to explain what the numbers actually mean in your clinical context. For the full overview of testing we offer, see blood tests.
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When a GP may recommend blood tests
Blood tests are particularly relevant for persistent fatigue or low energy, suspected infection or inflammatory conditions, hormonal concerns including menopause, thyroid or testosterone, nutritional issues such as iron, vitamin D or B12 deficiency, cardiovascular risk assessment including cholesterol and blood sugar, medication monitoring, and general health screening and preventive review. The decision to test should follow from a clinical conversation rather than an assumption that more tests always means better care.
Why GP oversight matters
It is now easy to order blood tests directly from online providers. The difficulty is that results in isolation are often less useful than patients expect. A marginally abnormal result may mean nothing. A normal result may still warrant further investigation if symptoms suggest otherwise. A borderline thyroid reading may or may not explain the symptoms depending on the wider picture. A GP who has taken a proper history can focus testing on what is most likely to answer the clinical question, explain what the results mean in context, and ensure the next step — whether reassurance, treatment, monitoring or referral — follows logically from the findings.
The process
How blood tests work at Basuto
If your GP thinks blood tests would help clarify the picture, these can often be arranged promptly from the same practice. The sample is taken during or shortly after the consultation. Results are typically available within 24–72 hours and are reviewed by the GP who ordered them. A follow-up discussion — whether by phone, video or in person — ensures that the findings lead to a clear next step rather than leaving patients to interpret numbers alone.
The consultation fee covers the GP appointment. Blood test laboratory charges are separate and vary depending on what is ordered. Costs are explained before testing is arranged.
Same-day appointments available. Book online or call 020 7736 7557.
Common blood test panels
The specific tests your GP recommends will depend on your symptoms and clinical history. Common panels include full blood count (anaemia, infection, inflammation), thyroid function (fatigue, weight change, mood), lipid profile (cardiovascular risk), fasting glucose and HbA1c (diabetes screening), liver and kidney function, iron studies, vitamin D and B12, and hormone panels (menopause, testosterone, fertility). For broader preventive review, a health screening appointment may combine a clinical consultation with a structured blood test panel.
After results
What should happen after results
A normal result should come with clear confirmation of what has been ruled out. A borderline result should be explained — whether it warrants repeat testing, lifestyle adjustment, or monitoring. An abnormal result should lead to a concrete next step: a prescription, a treatment plan, a referral, or further investigation.
At Basuto, results are reviewed by the GP who ordered the tests, explained in plain language, and connected to a management plan rather than delivered as raw data.
Frequently asked questions
Can I just book blood tests without seeing a GP first?
We generally recommend a GP consultation first, so the right tests are selected based on your symptoms and the results can be interpreted alongside your symptoms and history. This produces more useful outcomes than ordering a broad panel without a clinical question to guide it.
How much do blood tests cost?
Blood test costs vary depending on which tests are ordered. The GP consultation fee is £150. Laboratory charges for blood tests are separate and will be explained before anything is arranged. Full pricing details are available on the website.
How quickly will I get results?
Most results are available within 24–72 hours. Your GP will review them and arrange a follow-up discussion to explain the findings and agree on next steps.
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