What this test can tell a clinician.
Testing may be discussed for unexplained changes in weight, energy, temperature tolerance or heart rate, or for monitoring a known thyroid condition.
A result is one part of a clinical assessment. Discuss new or persistent symptoms with a healthcare professional rather than relying on a test alone.
What is being measured?
TSH is a signal from the pituitary gland to the thyroid. T3 and T4 are thyroid hormones. A clinician chooses which measurements are useful for the question being investigated.
What may affect interpretation
Pregnancy, illness, medication and supplements can affect thyroid results. Tell your clinician about biotin and all medicines; do not change treatment on your own.
Before your collection.
There is no verified MediCheck-specific preparation protocol on this page. Ask which instructions apply to the exact test requested; do not assume all blood tests need fasting.
- Bring the test request and relevant previous reports.
- Discuss medicines, supplements and any special collection timing.
- Follow the clinician or laboratory’s test-specific instructions.
- Do not stop prescribed medicines without medical advice.
Specimen & collection
Confirm the exact specimen, container and collection instructions for your request. Home collection suitability has not been verified.
Report timing
No turnaround commitment is published. Ask the laboratory when each requested result is expected and how it will be delivered.
Price & availability
Fees and current availability are unverified. Obtain the final inclusions and total cost before arranging a test.
Questions, answered thoughtfully.
Which thyroid measurements have been requested?
TSH, T3 and T4 are different measurements. The clinician selects the appropriate combination; a “thyroid profile” name does not confirm an exact panel.
Could my supplements interfere with the result?
Biotin may interfere with some thyroid tests. Tell your clinician about all supplements and follow their advice; do not stop prescribed treatment yourself.
Does an abnormal result mean I have a disease?
Not necessarily. Reference ranges, symptoms, medicines and previous results all matter; follow-up testing may be needed.