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Why test for muscle weakness & cramps?
Muscle cramps are common and often linked to exercise or dehydration. Blood tests can check minerals that muscles rely on, such as magnesium and calcium, and creatine kinase (CK), an enzyme released when muscle is damaged. Some medicines, including statins, can also affect muscles.
Recommended tests
Sports profile
Compare pricesCombines markers relevant to training, recovery and muscle health
Creatine kinase
Testosterone
Cortisol
Ferritin
When to see your GP
Seek urgent medical advice if muscle pain comes with dark or tea-coloured urine. See your GP if weakness is getting worse, such as difficulty climbing stairs or rising from a chair.
Why test for muscle weakness & cramps?
Symptom-led matching
See the tests commonly used to investigate this symptom
UKAS accredited labs
Every listed provider uses UKAS-accredited UK laboratories
Clear turnaround
Typical result times shown alongside price and biomarker coverage
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