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Vitamin B12 checks a vitamin or nutrient level so any deficiency can be corrected with the right dose.
Also known as: Cobalamin, Vitamin B-12 Level
Sample
Blood
Fasting
Not required
Report in
24 hours
Collection
Free at home
The Vitamin B12 test measures the amount of vitamin B12 in your blood - a nutrient essential for healthy nerve function, red blood cell production and DNA synthesis. Deficiency is common, especially among vegetarians/vegans, older adults, and people with absorption issues.
Ordered to investigate fatigue, numbness/tingling in hands or feet, memory issues, or anaemia with large red blood cells (macrocytic anaemia) seen on a CBC. Also checked in vegetarians/vegans, older adults, and people with conditions affecting nutrient absorption (like Crohn’s disease or after gastric surgery).
It can help your doctor assess
Vitamin B12 deficiency, which can cause macrocytic anaemia and, if untreated, nerve damage.
This test may be considered for:
Whether this test is right for you depends on your symptoms, medical history and the reason for testing - your doctor can advise.
Serum vitamin B12 (cobalamin) concentration.
Vitamin B12
Vitamin Status
Essential for red blood cell formation, DNA synthesis and maintaining the protective covering of nerves - deficiency can affect both blood and nervous system health.
How to read your result
Your report should be read using the reference interval, unit and method shown by the performing laboratory. A result outside a reference interval does not automatically establish a diagnosis, and a result inside the interval does not rule out every health problem. Clinical interpretation depends on symptoms, history and other findings.
| Marker | Result | What it may be associated with |
|---|---|---|
| Vitamin B12 | Low | May cause fatigue, macrocytic anaemia, and if prolonged, numbness/tingling or other nerve-related symptoms. Common in vegetarians, older adults, and those with absorption issues. |
| Vitamin B12 | High | Usually from supplementation and not harmful, since excess B12 is cleared through urine; occasionally linked to liver conditions or certain blood disorders. |
If a result is outside the range
If the Vitamin B12 is reported as high, low, positive, negative or otherwise outside the laboratory's stated interval, the meaning depends on the specific test and the reason it was ordered. Your clinician may consider repeat testing, related investigations or other clinical information before deciding what the result means.
Limitations of this test
Borderline-normal B12 levels don’t always rule out a functional deficiency - your doctor may check additional markers (like MMA or homocysteine) if symptoms strongly suggest deficiency despite a normal result.
An abnormal result does not by itself mean you have a particular disease. Your doctor interprets results together with your symptoms, history and other tests.
| Parameter | Reference range | Unit |
|---|---|---|
| Vitamin B12 | 200 - 900 | pg/mL |
Typical adult ranges for guidance. Reference intervals vary with the laboratory method, age and sex - always read your result against the range printed on your own report.
Book
Choose the test and a time slot online, or call us and we'll book it for you.
Prepare
Follow the preparation steps above for this test.
Sample collection
A trained phlebotomist collects the sample at your home - no extra charge.
Laboratory processing
Your sample is processed in our laboratory and reviewed by a pathologist.
Report
Your report is shared on WhatsApp and email, usually within 24 hours.
For a blood-based test, a small blood sample is collected by a trained healthcare professional, usually from a vein in the arm. The collection normally takes only a few minutes; mild temporary discomfort or bruising can occur at the puncture site.
Recent B12 supplementation or injections, and certain medicines (like metformin and long-term acid-reducing drugs), can affect results.
Laboratory results are interpreted together with your symptoms, medical history and other investigations. If your results are significantly abnormal, or you have symptoms that worry you, discuss them with a qualified doctor promptly.
Trusted public health sources for the information on this page:
This information is for general awareness and does not replace advice from your doctor.
The Vitamin B12 test cost in Mumbai at HWP Diagnostic is ₹799 - 50% less than the MRP of ₹1,599. There are no extra charges for home sample collection. The same price applies across Malad, Kandivali, Borivali and Goregaon.
| Test | Vitamin B12 |
|---|---|
| Price at HWP Diagnostic | ₹799 |
| MRP | ₹1,599 (you save ₹800 - 50% off) |
| Home collection charge | Free |
| Report time | 24 hours |
| Fasting | Not required |
| Available in | Malad, Kandivali, Borivali & Goregaon (same price) |
Book the Vitamin B12 test with free home sample collection anywhere in Malad, Kandivali, Borivali and Goregaon, or walk in to our lab in Malad West, Mumbai - open 24×7.
Home collection areas include
Malad WestMalwani & KharodiMalad EastKandivali WestKandivali EastBorivali WestGorai & Borivali WestIC Colony & MandapeshwarBorivali EastGoregaon WestBangur Nagar & Motilal NagarGoregaon EastAarey ColonyDahisarJogeshwari WestJogeshwari East
Directions on Google MapsIt is also known as Cobalamin, Vitamin B-12 Level.
Home collection at the same price (₹799) across these areas, with our lab in Malad West open 24×7.
Get this test along with other important checks - usually for less than booking them separately.
No fasting is required, though your doctor may ask you to fast if it’s combined with other tests.
Vitamin B12 is found almost exclusively in animal products (meat, eggs, dairy), so vegetarians and especially vegans have a higher risk of deficiency unless they take supplements or eat fortified foods.
Fatigue, weakness, pale skin, numbness or tingling in the hands/feet, memory difficulties, and mood changes are common symptoms, developing gradually over time.
Usually with oral supplements or, in more significant deficiency, B12 injections - your doctor will decide based on the severity and cause of your deficiency.
Yes, long-term metformin use (a common diabetes medicine) is associated with reduced B12 absorption, so periodic testing is often recommended for people on this medication.
Vitamin B12 is a blood test. Vitamin B12 checks a vitamin or nutrient level so any deficiency can be identified and treated by your doctor.
The Vitamin B12 may be ordered when a healthcare professional needs information about the condition or health area assessed by this test. Vitamin B12 checks a vitamin or nutrient level so any deficiency can be identified and treated by your doctor. At HWP Diagnostic the sample can be collected free at your home in Malad and nearby Mumbai areas, and the report is usually shared within the same day or next day. Please carry or upload your doctor's prescription where the test needs one, and discuss the result with your doctor for a full interpretation.
Vitamin B12 checks a vitamin or nutrient level so any deficiency can be identified and treated by your doctor.
The test may be relevant for people whose symptoms, medical history, screening needs or treatment monitoring match the purpose of the Vitamin B12.
No special preparation is needed for this test.
No, fasting is not required for the Vitamin B12. You can eat and drink normally unless your doctor has advised otherwise.
The Vitamin B12 is done on a blood sample.
For a blood-based test, a small blood sample is collected by a trained healthcare professional, usually from a vein in the arm. The collection normally takes only a few minutes; mild temporary discomfort or bruising can occur at the puncture site.
Reports for the Vitamin B12 are usually ready within 24 hours of sample collection. You receive them on WhatsApp and email.
The Vitamin B12 costs Rs 740 at HWP Diagnostic (MRP Rs 990). Home sample collection is free.
Your report should be read using the reference interval, unit and method shown by the performing laboratory. A result outside a reference interval does not automatically establish a diagnosis, and a result inside the interval does not rule out every health problem. Clinical interpretation depends on symptoms, history and other findings.
If the Vitamin B12 is reported as high, low, positive, negative or otherwise outside the laboratory's stated interval, the meaning depends on the specific test and the reason it was ordered. Your clinician may consider repeat testing, related investigations or other clinical information before deciding what the result means.
The Vitamin B12 can provide important information, but laboratory results are generally interpreted together with symptoms, medical history, examination and other investigations. A single result should not be treated as a diagnosis without clinical context.
Some medicines, supplements, food, exercise and other pre-test factors can affect particular laboratory results. Tell the healthcare professional about medicines and supplements you take, and do not stop prescribed medicines unless your clinician tells you to.
Yes. Free home sample collection for the Vitamin B12 is available across Malad, Kandivali, Borivali and Goregaon in Mumbai. You can also visit our Malad West lab, open 24x7.