Measure, don't guess

Specialist lab tests for fatigue

Routine tests often come back “normal”. Targeted testing looks more closely at the systems most likely to be draining your energy, chosen because your history points to them.

Our laboratories

Four labs, four lenses

London

The Doctors Laboratory

  • Thyroid, iron and nutrient panels
  • Blood sugar and inflammation
  • Panels chosen case by case

USA

Genova Diagnostics

  • Adrenal stress profiles
  • GI Effects stool profile
  • Nutritional testing

USA

Mosaic Diagnostics

  • Organic acids testing
  • Mitochondrial markers
  • Yeast and mould testing

USA

Cyrex Labs

  • Autoimmune reactivity
  • Gut and blood–brain barrier
  • Food immune reactions

Common panels

The tests we reach for most

Never a blanket screen: each test earns its place.

The Doctors Laboratory · Blood

Full Thyroid Panel

TSH, free T4 and T3, reverse T3 and thyroid antibodies, a fuller picture than a standard TSH check.

Helpful for

  • Sluggishness
  • Feeling cold
  • Brain fog
  • Low mood
The Doctors Laboratory · Blood

Energy & Nutrient Panel

Iron and ferritin, vitamin B12, folate, vitamin D and magnesium: common, correctable drains on energy.

Helpful for

  • Tiredness
  • Breathlessness on effort
  • Pins and needles
  • Poor recovery
The Doctors Laboratory · Blood

Blood Sugar & Inflammation

HbA1c, fasting insulin and inflammation markers such as CRP.

Helpful for

  • Energy crashes
  • Cravings
  • Aches and pains
  • Post-viral fatigue
Genova Diagnostics · Saliva

Adrenal Stress Profile

Cortisol across the day, showing how your stress response is working.

Helpful for

  • Wired but tired
  • Waking unrefreshed
  • Burnout
Mosaic Diagnostics · Urine

Organic Acids Test

Markers of mitochondrial energy production, nutrient status, neurotransmitters and yeast or bacterial overgrowth.

Helpful for

  • Chronic fatigue
  • Brain fog
  • Muscle fatigue
  • Gut symptoms
Genova Diagnostics · Stool

GI Effects Stool Profile

Digestion, inflammation and the microbiome, part of the gut–brain picture.

Helpful for

  • Fatigue with gut symptoms
  • Fibromyalgia
  • Food reactions

How testing works

From consultation to results

  1. Agree the tests

    At your Discovery Consultation we agree which tests are worth doing, and the cost, before anything is ordered.

  2. Collect your samples

    Many kits can be done at home. Some blood tests need a local blood draw.

  3. Results come in

    The lab sends results to the clinic, ready for your Full Assessment.

  4. Understand them

    We explain your results in plain terms and turn them into a plan.

Lab test fees are separate from consultation fees and are quoted before anything is ordered.

Test what matters, not everything

Testing is aimed at the systems most likely to be draining your energy.

Book a Discovery Consultation

Free energy & brain health emails

Get regular emails to help you get your energy back

Practitioner-written tips on brain fatigue, sleep, pacing and recovery. No spam, no pressure, unsubscribe at any time.