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What is a Vitamin B9 (Folic Acid) Test?
The Vitamin B9 (Folic Acid) test measures the amount of folate in your bloodstream. Folate is a water-soluble B vitamin that is essential for cell division and the production of DNA and RNA. It works closely with Vitamin B12 to help form healthy red blood cells. A Folic Acid test is a crucial diagnostic step for identifying megaloblastic anemia and ensuring proper fetal development during pregnancy — as the body cannot store folate in large amounts and must replenish it regularly through diet.
⚠ Important: Fasting for 8–12 hours is recommended before this test for the most accurate results. Avoid alcohol for at least 24 hours before the test as it can interfere with folate levels. Since folate is sensitive to light and temperature, our phlebotomists use specialized cold-chain handling to maintain sample integrity.
Why Folate Levels are Critical
Folic acid is vital for various biological processes and a deficiency can lead to significant health complications:
- Pregnancy Support — Essential for preventing neural tube defects (NTDs) like spina bifida in the developing fetus during early pregnancy
- Diagnosing Anemia — Helps identify megaloblastic anemia where the bone marrow produces unusually large, structurally abnormal red blood cells
- Nervous System Health — Folate is necessary for maintaining optimal brain and nerve function
- Monitoring Malabsorption — Evaluates patients with conditions like Celiac disease or Crohn's disease that hinder nutrient absorption
- Heart Health — Low folate can lead to elevated homocysteine levels which are linked to increased risk of heart disease and stroke
Normal Folic Acid (Folate) Range
| Folate Level | Interpretation |
|---|---|
| Above 5.9 ng/mL | Normal – adequate folate levels |
| 3.0 – 5.9 ng/mL | Borderline – possible early deficiency |
| Below 3.0 ng/mL | Deficient – supplementation and further testing needed |
Your doctor will interpret your folate result alongside your Vitamin B12, CBC and clinical symptoms.
Who is at High Risk of Folate Deficiency?
High-risk groups who should test regularly:
- Pregnant women and those planning pregnancy — folate demand increases significantly
- People with poor dietary intake of green leafy vegetables, legumes and citrus fruits
- Patients with Celiac disease, Crohn's disease or other malabsorption conditions
- Heavy alcohol consumers — alcohol impairs folate absorption and increases excretion
- Patients on long-term medications like Methotrexate, Phenytoin or Sulfasalazine
- Patients on dialysis — folate is lost during the dialysis process
- Elderly individuals with poor diet or malabsorption
When is a Folic Acid Test Recommended?
Your doctor may recommend a Folic Acid test if you:
- Are pregnant or planning to conceive
- Have symptoms of anemia — fatigue, weakness, pale skin, shortness of breath
- Have a CBC showing large red blood cells (macrocytosis)
- Have elevated homocysteine levels
- Have a malabsorption condition like Celiac or Crohn's disease
- Are a heavy alcohol consumer
- Are on medications that deplete folate such as Methotrexate or anticonvulsants
- Have unexplained neurological symptoms alongside low B12
What Conditions Does Folic Acid Test Help Diagnose?
- Folate deficiency
- Megaloblastic anemia (large abnormal red blood cells)
- Neural tube defects risk assessment in pregnancy
- Hyperhomocysteinemia (elevated homocysteine linked to cardiovascular risk)
- Malabsorption syndromes (Celiac disease, Crohn's disease)
- Monitoring folate supplementation therapy
- Medication-induced folate depletion (Methotrexate, anticonvulsants)
Folate vs Vitamin B12 — Key Differences
| Feature | Folate (B9) | Vitamin B12 |
|---|---|---|
| Main food sources | Green leafy vegetables, legumes, citrus | Meat, fish, eggs, dairy |
| Body stores | Limited — depletes within weeks to months | Large — can last 3–5 years |
| Anemia type | Megaloblastic anemia | Megaloblastic anemia |
| Neurological damage | No | Yes — permanent if untreated |
| Critical in pregnancy | Yes — prevents neural tube defects | Yes — supports fetal brain development |
Folic Acid Test Price in Kolkata
Vitamin B9 (Folic Acid) Test Price: ₹1,550
8–12 hours fasting recommended | Avoid alcohol 24 hrs before | Free home collection above ₹2,000
8–12 hours fasting recommended | Avoid alcohol 24 hrs before | Free home collection above ₹2,000
Tests Commonly Ordered Alongside Folic Acid
- Vitamin B12 — both B12 and folate deficiency cause similar anemia and are always tested together
- CBC (Complete Blood Count) — checks for megaloblastic anemia with large red blood cells
- Homocysteine — elevated in both folate and B12 deficiency and linked to cardiovascular risk
- Serum Iron & Ferritin — to rule out concurrent iron deficiency anemia
- Thyroid Profile (TSH) — thyroid disorders can cause similar fatigue symptoms
Home Collection for Folic Acid Test in Kolkata
Apollo Diagnostics provides home blood sample collection for Folic Acid tests across North and Central Kolkata. Since folate is sensitive to light and temperature, our phlebotomists use specialized cold-chain handling from collection to laboratory. Samples are processed at our NABL-certified central laboratory for accurate results.
- Home collection available: 7:00 AM – 2:30 PM Daily
- 8–12 hours fasting recommended before collection
- Avoid alcohol for 24 hours before the test
- Free home collection on orders above ₹2,000
- Digital reports delivered to WhatsApp within 24 hours
Quick Links
→ Apollo Diagnostics Nagerbazar → Full List of Individual Tests → Book Home Collection → Full Body Checkup Packages
→ Apollo Diagnostics Nagerbazar → Full List of Individual Tests → Book Home Collection → Full Body Checkup Packages
Frequently Asked Questions
Q1. What is the Folic Acid test used for?
The Folic Acid (Vitamin B9) test measures folate levels in the blood. It is used to diagnose folate deficiency, identify megaloblastic anemia, assess neural tube defect risk during pregnancy, evaluate malabsorption conditions and monitor patients on medications that deplete folate like Methotrexate.
Q2. What is the normal Folic Acid level?
A normal serum folate level is above 5.9 ng/mL. Levels between 3.0–5.9 ng/mL are borderline and may indicate early deficiency. Below 3.0 ng/mL confirms deficiency and requires supplementation and further investigation.
Q3. Does the Folic Acid test require fasting?
Fasting for 8–12 hours is recommended for the most accurate folate results. Also avoid alcohol for at least 24 hours before the test as alcohol impairs folate absorption and can affect test results.
Q4. What is the Folic Acid test price at Apollo Diagnostics Kolkata?
The Vitamin B9 (Folic Acid) test price at Apollo Diagnostics is ₹1,550. Home collection is available free on orders above ₹2,000.
Q5. Why is Folic Acid important during pregnancy?
Folic acid is critical during the first 28 days of pregnancy for the proper development of the baby's neural tube, which becomes the brain and spinal cord. Folate deficiency during this period significantly increases the risk of neural tube defects like spina bifida and anencephaly. This is why doctors recommend folic acid supplementation ideally starting before conception and continuing through the first trimester.
Q6. What is the difference between Folic Acid and Folate?
Folate is the naturally occurring form of Vitamin B9 found in foods like green leafy vegetables, legumes and citrus fruits. Folic Acid is the synthetic form used in supplements and fortified foods. Both are converted to the active form of B9 in the body. The blood test measures serum folate regardless of whether it came from food or supplements.
Q7. Can alcohol cause Folic Acid deficiency?
Yes. Alcohol interferes with folate absorption in the small intestine and increases folate excretion through the kidneys. Heavy or chronic alcohol consumption is one of the most common causes of folate deficiency. Even moderate alcohol intake in the 24 hours before the test can temporarily affect folate levels and test accuracy.
Q8. Is home collection available for Folic Acid test in Kolkata?
Yes. Apollo Diagnostics provides home blood sample collection for Folic Acid tests across Dum Dum, South Dum Dum, Nagerbazar, Satgachi, Baguiati, Lake Town, Bangur, Kaikhali, Sealdah, Entally, Phoolbagan, Tangra and surrounding areas. Our phlebotomists use specialized cold-chain handling for folate samples. Book by calling or WhatsApping +91 8660434628.
Q9. How long does it take to get Folic Acid test results?
Folic Acid test results are typically available within 24 hours of sample collection. Reports are delivered digitally to your WhatsApp or email.
Q10. Which centre processes my Folic Acid sample in Kolkata?
All samples collected across North and Central Kolkata are processed at Apollo Diagnostics Nagerbazar — Nandarani Apartment, 8A Narasingha Avenue, Nagerbazar, Dum Dum, Kolkata 700074. Our lab is NABL-certified and ISO-certified.
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