If you've been feeling ‘not quite right’ for a while — tired, foggy, gaining weight you can't explain, or just aware that you haven't had a proper check-up in years — it's tempting to put it down to stress, age or a busy life. Sometimes that's exactly what it is. But fatigue, mood changes, weight shifts and irregular cycles are also the way your body flags dozens of different underlying issues, from thyroid problems to iron deficiency to early metabolic disease. The Advanced GP3 (Female) blood test is designed for exactly this situation: rather than guessing which single test to book, it screens 63 markers across every major organ system in one sitting, so you and your clinician get the full picture at once.
Why ‘non-specific’ symptoms deserve a proper look
Symptoms like tiredness, brain fog, weight gain, low mood, irregular periods or hair thinning rarely point to one obvious cause — which is exactly why they're so often dismissed or misdiagnosed. In our clinics, the most common underlying explanations include:
- Thyroid dysfunction — an underactive thyroid alone can cause fatigue, weight gain, low mood, dry skin and hair thinning, and is easily missed on a single TSH test without free T4, T3 and antibodies.
- Iron deficiency — common in women of reproductive age, especially with heavy periods, and can cause fatigue and breathlessness well before anaemia shows up on a full blood count.
- Hormonal shifts — perimenopause, PCOS or other hormonal changes can affect mood, weight, cycles and energy, and are best interpreted alongside FSH, LH, oestradiol and testosterone.
- Vitamin D or B12 deficiency — both widespread in the UK and linked to fatigue, low mood and muscle aches.
- Early metabolic or cardiovascular changes — raised cholesterol, blood sugar or inflammation markers that haven't yet caused symptoms but matter for long-term health.
- Liver or kidney strain — from alcohol, medication, weight gain or underlying conditions, often silent until picked up on routine bloods.
When to seek help
Most of the causes above are common and very manageable once identified — this is a screening test, not an emergency assessment. But if you have severe, sudden or rapidly worsening symptoms, unexplained significant weight loss, chest pain, breathlessness at rest, or heavy bleeding, seek urgent medical attention rather than waiting for a routine blood test.
As a rule, seek urgent care for severe, sudden or rapidly worsening symptoms, and book a routine test for milder, longer-standing concerns like the ones above.
What the Advanced GP3 (Female) checks
Rather than testing one thing at a time, the Advanced GP3 (Female) panel screens 63 markers across 14 areas of your health in a single blood draw. Here's what each group can tell you:
Thyroid
This panel checks TSH, free T4, free T3 and thyroid antibodies. An underactive or overactive thyroid can cause tiredness, weight changes, low mood, hair thinning or a fast or irregular heartbeat — often mistaken for stress or "just getting older" — so a clinician can spot dysfunction even before it's obvious from symptoms alone.
Iron status
This panel checks ferritin, serum iron, TIBC, transferrin and transferrin saturation. Low iron is one of the most common, treatable causes of fatigue, breathlessness and poor concentration, often well before a full anaemia develops — a complete iron picture is far more useful than a ferritin test alone.
Vitamins
This panel checks vitamin D, vitamin B12, folate and magnesium. Deficiencies here are widespread in the UK and are linked to fatigue, low mood, muscle aches and poor immunity — and are simple to correct once identified.
Fertility hormones
This panel checks FSH, LH and progesterone. These reproductive hormones help explain irregular cycles, ovulation problems and fertility potential, and are a standard first step before further fertility investigation or treatment.
Hormones
This panel checks testosterone, oestradiol, SHBG, prolactin and free androgen index. These hormones influence energy, mood, libido, weight and cycle regularity, and imbalances are common at various life stages.
Heart & cholesterol
This panel checks your full lipid profile plus apolipoprotein B and lipoprotein(a) — advanced markers that refine cardiovascular risk beyond standard cholesterol, building an accurate cardiovascular risk picture. Cholesterol and related lipid markers are among the strongest predictors of long-term heart and stroke risk, and rarely cause symptoms until a problem is advanced.
Blood sugar
This panel checks glucose, HbA1c, insulin, creatine kinase and adiponectin, screening for diabetes and pre-diabetes, which can develop silently for years with no obvious symptoms.
Liver function
This panel checks ALT, AST, GGT, ALP, bilirubin and albumin. Liver enzymes can flag early strain from alcohol, medication, weight gain or fatty liver disease long before any symptoms appear.
Kidney function & salts
This panel checks creatinine, eGFR, cystatin C, sodium, potassium, urea and uric acid. Kidney function can decline silently for years before it's noticed, so these markers give an early warning of reduced kidney function, dehydration or salt imbalances.
Bone & mineral health
This panel checks calcium, phosphate and parathyroid hormone (PTH), giving an early picture of bone and mineral health that can also flag problems affecting energy and muscle function.
Full blood count
This panel includes a full blood count — red cells, white cells, platelets and related indices — one of the single most useful all-round checks available, screening for anaemia, infection and abnormalities in your blood.
Inflammation
This panel checks C-reactive protein (CRP), a general marker of inflammation in the body that can point towards infection, a chronic inflammatory condition, or increased cardiovascular risk.
Autoimmune screen
This panel checks rheumatoid factor, a general screening marker for autoimmune joint disease — useful context if you have unexplained joint pain, swelling or stiffness.
Pancreas
This panel checks lipase, a marker of pancreatic function assessed as part of a wider picture when abdominal symptoms or metabolic risk factors are present.
Advanced GP3 (Female) — £324
CQC-regulated · Rated 4.88/5 on Doctify · Open 7 days 8am–8pm · No referral needed
Why the Advanced GP3 (Female) is the right test
The Advanced GP3 (Female) panel exists because piecing together fatigue, mood, weight and cycle symptoms from a handful of separate, cheaper tests often misses the answer — a low-normal thyroid result only makes sense next to iron, vitamin D and hormone levels, not on its own. This is our most comprehensive female screen, going a step further than the Advanced GP2 by adding parathyroid hormone, cystatin C and uric acid for kidney and bone health, apolipoprotein B and lipoprotein(a) for a more precise cardiovascular risk picture, and a fuller reproductive hormone and vitamin panel.
Every result is reviewed by a clinician, who explains what's in range, what isn't, and what — if anything — needs a follow-up appointment, referral or repeat test. For many women, it's the first time all these systems have been checked together, rather than one at a time over several GP visits.
Frequently Asked Questions
Who is the Advanced GP3 Female blood test for?
It suits women who want the most thorough available screen — whether you have several unexplained symptoms, haven't had bloods done in years, have a family history of thyroid, heart or metabolic conditions, or simply want complete reassurance in one appointment rather than several separate tests.
How is this different from the Advanced GP2 Female panel?
GP3 is one level up from GP2: it adds parathyroid hormone, cystatin C and uric acid, apolipoprotein B and lipoprotein(a) for cardiovascular risk, and a fuller vitamin and reproductive hormone panel — 63 markers in total versus 49 in GP2.
Do I need to fast before this blood test?
Yes — because this panel includes glucose and HbA1c, we recommend avoiding food for around 8-10 hours beforehand (water is fine). Our team will confirm exact preparation when you book.
Do I need a GP referral to book this test?
No referral is needed. You can book directly online or by calling 0121 387 3727. Same-week appointments are available 7 days a week, 8am to 8pm.
Can I claim this on private health insurance?
Self-funded blood tests are usually paid for directly rather than through insurance, as most insurers require a referral first. If you would like to use insurance, call us on 0121 387 3727 and our team will advise on the best route for your policy.
Reference ranges vary between laboratories and are influenced by age, sex and other individual factors. This article is for general information only and does not replace a clinical consultation — every result in the Advanced GP3 (Female) panel is reviewed by a clinician before it's released to you. Further reading: Lab Tests Online UK →