The FERRITIN measures the levels of essential vitamins, minerals, or nutrients in your blood. Nutritional deficiencies are far more common than most people realise and can cause a wide range of symptoms including fatigue, bone pain, muscle weakness, poor immunity, low mood, and neurological changes — often mistaken for other conditions.
This test measures the concentration of one or more specific nutrients — such as vitamin D, vitamin B12, folate, ferritin, zinc, magnesium, or calcium — in the blood or serum. Levels below the reference range indicate deficiency; levels above it (for fat-soluble vitamins like D) may indicate toxicity from excess supplementation.
Understanding who needs this test and what symptoms to look out for.
This test is ordered to investigate persistent fatigue, bone or muscle pain, recurrent infections, neurological symptoms (tingling, numbness), low mood or poor concentration, or dietary restriction (vegan/vegetarian diet, malabsorption). It is also performed for monitoring during supplementation treatment.
Book this test if you feel chronically tired, have muscle weakness or bone pain, follow a restrictive diet, have a condition affecting nutrient absorption (coeliac disease, inflammatory bowel disease, bariatric surgery), or if you want to check your nutritional status as part of a health review.
No fasting is required for most nutritional tests. Vitamin D is best measured without recent supplementation — space testing at least 2 weeks from starting a new supplement if possible. Bring a list of all supplements you are currently taking.
Select your test, choose a convenient time, and confirm your booking — no GP visit or referral required.
Provide a urine sample at home, at your workplace, or at one of our island-wide collection points — or book a home visit with a trained phlebotomist if a blood sample is required.
A doctor reviews every result and contacts you with a clear, plain-English explanation and any recommended next steps.
Deficiencies are typically corrected with targeted supplementation or dietary changes. Severe deficiencies (e.g. very low B12, vitamin D < 25 nmol/L) may require high-dose replacement and a repeat test to confirm correction. Your MDLink doctor will recommend appropriate doses and follow-up testing.
No referral is required. You can book directly through MDLink without seeing a GP first — simply choose a time that works for you and confirm your booking online.
After booking, you can visit one of our certified partner laboratories for sample collection. Alternatively, select the house-call option and a trained phlebotomist will come to you at home or your workplace.
Turnaround times vary by test. A doctor will contact you once your results are ready to explain what they mean and advise on any follow-up — you are never left to interpret results alone.
Your MDLink doctor will explain your results clearly and recommend next steps — which may include a repeat test, additional investigations, or a specialist referral tailored to your situation.
Yes. Select the house-call option at booking and a trained phlebotomist will visit you at your preferred address at a convenient time.
No GP referral needed · Certified laboratories · Results reviewed and explained by a doctor
Book online — from US$17.00