GLP-1 injections and oral treatments with ongoing clinical support
Hormone replacement therapy with specialist support
At-home kits matched by questionnaire, with clinician-reviewed results in your account
Effective prescription treatments - prescribed same day
Clinically proven treatments that work for 9 in 10 men
Prescription treatments for acne, rosacea and more
Prescription support to help you quit for good
Repeat contraceptive pill prescriptions reviewed by UK clinicians
Short-term norethisterone prescriptions for delaying your period
Prescription migraine relief when over-the-counter options are not enough
Confidential at-home STI testing with fast results from our UK lab
Discreet at-home sexual health screening with UK clinician support
Prescription-strength antihistamines and nasal sprays for seasonal allergies
Discreet consultations for prescription PE treatments
Clinician-reviewed supplement plans alongside your treatment
Persistent fatigue is a chronic lack of energy that does not improve with sleep. It is often caused by biological imbalances such as iron deficiency anaemia, vitamin D or B12 depletion, or an underactive thyroid (hypothyroidism). A doctor-reviewed home blood test checks these biomarkers and supports a targeted recovery plan.
Acute tiredness after late nights is normal. Fatigue that disrupts your daily routine suggests your body is struggling to generate energy at a cellular level.
When investigating chronic fatigue, clinicians evaluate several physiological markers:
| Primary symptom | Possible underlying biomarker imbalance | Initial test indicated |
|---|---|---|
| Heavy limbs, breathlessness on exertion, pale skin | Low ferritin / depleted iron stores | Full blood count and ferritin |
| Brain fog, pins and needles, mental sluggishness | Low active vitamin B12 or folate | Complete vitamin profile |
| Deep bone ache, muscle weakness, low mood | Vitamin D3 deficiency | Vitamin D (25-OH) test |
| Feeling constantly cold, weight gain, morning exhaustion | Elevated TSH / low Free T4 (hypothyroidism) | Thyroid function profile |
Guessing which supplement to take often delays proper treatment. PrivateDoc provides doctor-led diagnostics from home:
Start with the questionnaire. We match the kit. You collect the sample at home, post it back, and read the reviewed report in your account.
Disclaimer: This article is for general information only and does not replace personalised medical advice. Always speak to a qualified clinician before starting or changing treatment. An at-home blood test does not replace your GP or emergency care.
Persistent fatigue can come from low ferritin, vitamin D or B12, folate, or an underactive thyroid. A clinician-reviewed home blood test checks those markers instead of guessing a supplement.
A core health check or complete vitamin profile is a typical starting point. If cold intolerance and weight gain dominate, a thyroid function check may be a better match. The questionnaire routes you.
Yes. Ferritin can be low enough to restrict tissue oxygenation before full anaemia develops. That often shows up as heavy limbs and breathlessness on exertion.
A PrivateDoc clinician explains the report in your account and recommends supplementation, thyroid follow-up, a further test, or a GP letter. Urgent symptoms still belong with NHS 111 or emergency services.
We post the matched kit. You return it in the prepaid pack
A clinician reviews the laboratory report in your PrivateDoc account
Lp(a) is a genetic cholesterol particle NHS lipid checks usually omit. See why HEART UK recommends a once-lifetime test and how PrivateDoc's cardiac profile includes it.
Total testosterone can look normal while free testosterone is low if SHBG is high. See symptoms, why to test at 8 to 10am fasting, and how the Male Health Blood Test works.
A Weight and Metabolism blood profile can identify thyroid, blood sugar, iron, and lipid issues that stall weight loss. A UK clinician reviews the report and can guide next steps.
NICE often diagnoses menopause from symptoms if you are over 45. A home hormone panel can still help in perimenopause, younger symptoms, or when HRT is not settling things. A clinician reviews the report.
A home blood test is only useful once a UK-registered clinician has reviewed the report. PrivateDoc matches a kit from a short questionnaire and explains abnormal markers in your account.
