How are my samples analysed?

Samples are analysed by our partner, The Doctors Laboratory (TDL) — a UKAS-accredited medical laboratory (No. 8812) operating to ISO 15189:2022 standards. Your report is then delivered securely to you by email.

When will I receive my results?

Most results are delivered within 24–72 hours of the laboratory receiving and accepting a suitable sample. Some specialist tests may take longer. Times are estimates, not guarantees, and may be affected by sample quality, repeat testing, weekends, bank holidays and laboratory workload.

What if a result is outside the normal range?

Flagged results are clearly marked on your report. We recommend discussing all results with your GP or an appropriate healthcare professional.

Can I add more tests to a bundle?

Yes. You can add individual tests from any category. Where medically and operationally suitable, compatible tests may be combined into one collection kit.

Is my data kept private?

Your health data is stored securely and handled in line with UK GDPR and the Data Protection Act 2018. Only you and those you authorise can access your results.

How accurate are my results?

Your blood samples are analysed by our partner, The Doctors Laboratory (TDL) — a UKAS-accredited medical laboratory (No. 8812) operating to ISO 15189:2022 standards. Your original laboratory report is delivered to you by email.

Home Health BundlesUltimate Energy & Fatigue Panel

Energy & Nutrition

Ultimate Energy & Fatigue Panel

Name: Ultimate Energy & Fatigue Panel
Brand: OptiBlood
Price: 129.00 GBP

Investigates common nutritional and thyroid-related factors associated with tiredness, low energy and fatigue.

6 Biomarkers Measured

£129£144

Save £15Introductory Offer

Collection Confidence Guarantee

Simple at-home finger-prick collection kit included
Prepaid Royal Mail Tracked 24 return mailer included
Analysed by The Doctors Laboratory (UKAS Accredited)
Free Replacement Kit Guarantee: if your sample clots or is insufficient for laboratory analysis, we dispatch a replacement kit free of charge.
No hidden test or delivery charges

INCLUDED TESTS & PROFILES

UNIQUE BIOMARKERS MEASURED

Bank-Level Data Security

Analysed by The Doctors Laboratory

UKAS Accredited & NHS Standards

Expected turnaround: 24–72h. This period begins when the laboratory receives and accepts a suitable sample. Times are estimates, not guarantees, and may be affected by sample quality, repeat testing, weekends, bank holidays and laboratory workload.

WHAT'S INCLUDED

Vitamin D, 25-OH
Active Vitamin B12
Ferritin — Iron Stores
Thyroid Profile 3

MAIN HEALTH AREAS COVERED

Vitamin DVitamin B12Iron storesThyroid function

This bundle covers the areas listed above. It is not a complete assessment of your overall health and does not replace a full consultation with a healthcare professional.

FULL TESTS & BIOMARKERS

View All Tests & Biomarkers

01Vitamin D, 25-OHView test

Vitamin D, 25-OH (25-OH D)

02Active Vitamin B12View test

Active Vitamin B12 (B12)

03Ferritin — Iron StoresView test

Ferritin

04Thyroid Profile 3View test

Thyroid-Stimulating Hormone (TSH)
Free T4 (FT4)
Free T3 (FT3)

WHO IS THIS FOR?

Adults experiencing persistent tiredness who want to investigate common associated factors.

HOW TO PREPARE

Collect your sample in the morning before eating. Stay well hydrated the day before.

Individual tests within this bundle may have different preparation or timing requirements. Full instructions are included with your kit.

HOW IT WORKS

Order

Choose your kit online. Delivered discreetly.

Collect

Simple finger-prick sample at home.

Return

Drop in any postbox using the prepaid Royal Mail Tracked 24 mailer.

Results

Receive secure, laboratory-reviewed results by email.

How You'll Receive Your Results

Once your laboratory analysis is complete, your original laboratory report will be delivered securely to your verified email address.

Original laboratory PDF report
Sent to your verified email address
Secure results delivered via email
Reports are not stored in your OptiBlood website account
Please check that your email address is correct before completing your order

TEST LIMITATIONS

Investigates common factors associated with fatigue. It does not confirm or identify the root cause of fatigue. Discuss results with an appropriate healthcare professional.

RELATED INDIVIDUAL TESTS

Vitamin D, 25-OH Active Vitamin B12 Ferritin — Iron Stores Thyroid Profile 3

RELATED HEALTH BUNDLES

Essential Health Check

A practical general health check covering blood sugar, cholesterol, liver function, kidney function and inflammation.

£125 · 5 tests/profiles · 15 biomarkers

Complete Thyroid Check

Assess the main thyroid hormones together with thyroid-related antibodies for a broader view of thyroid health.

£99 · 2 tests/profiles · 4 biomarkers

FREQUENTLY ASKED QUESTIONS

Most tests are best collected in the morning before eating. Stay well hydrated the day before. Specific timing advice is included with your kit where relevant.

WHEN TO SPEAK TO A HEALTHCARE PROFESSIONAL

A laboratory result is not a diagnosis. Discuss concerning results, or results that differ from what you expected, with an appropriate healthcare professional. They can interpret your results alongside your symptoms and medical history. If you are feeling acutely unwell, contact your GP or an appropriate healthcare professional directly.

MEDICAL DISCLAIMER

OptiBlood tests provide laboratory information and are not a substitute for medical diagnosis, physical examination or emergency care. Discuss concerning results or symptoms with an appropriate healthcare professional.

Ultimate Energy & Fatigue Panel

Kit, prepaid return and laboratory analysis included

£129

Inc. kit, return & analysis