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HomeAll Laboratory Tests & PanelsVitaminsFolic Acid
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Folic Acid

€ 20,00

Evaluates folic acid levels in red blood cells to assess long-term folate status.

Your test at a glance

Sample
Blood
Results from receipt
Usually 3–10 days
Fasting
An 8-hour overnight fast is recommended for a standardised nutrient assessment; plain water only. Follow your WHL instructions.

Timing starts when suitable samples arrive at the laboratory. Shipping time is additional. Combined panels may take longer.

Preparation: Pause non-prescribed nutritional supplements for at least 48 hours, unless WHL or your clinician advises otherwise.

WHL will send the full test instructions with your kit or appointment confirmation. Follow these before collecting.

Preparation and important notes

One charge per request. Processing and handling is charged once for the complete request, not for each test or panel. Collection and delivery charges are shown separately at checkout.

- +
SKU: FA-V Category:Vitamins Tags:Cell HealthDNA Synthesis
  • Description
  • Information
  • Preparation & results

Description

This test measures folic acid levels inside red blood cells, providing insight into long-term folate status. Folic acid is essential for DNA synthesis, cell division, and red blood cell formation, playing a crucial role in overall health.

  • Includes: Folic acid level assessment
  • Sample requirement: Serum and plasma

Suitable for postal submission.

Additional information

Weight 0,5 kg
Dimensions 25 × 16 × 2,5 cm
Sample Type

Blood

Preparing for this test

WHL will send detailed collection, storage and return instructions with your test kit or appointment confirmation. Those test-specific instructions take priority.

Sample: Blood

Fasting: An 8-hour overnight fast is recommended for a standardised nutrient assessment; plain water only. Follow your WHL instructions.

For nutritional testing, pause non-prescribed supplements, including protein and amino-acid powders, for at least 48 hours unless WHL or your clinician advises otherwise. If monitoring supplements, agree the timing with your practitioner.

Do not stop prescribed medicines or prescribed supplements without advice from your treating clinician. Tell WHL about high-dose biotin; some tests need a longer pause. A short supplement pause does not remove all effects of long-term use.

If another test in the same order requires fasting, follow the combined instructions. Ask your clinician or WHL before fasting if you have diabetes, use glucose-lowering medicine, are pregnant, or are arranging testing for a child.

When to expect your results

Usually 3–10 days. This estimate starts when suitable samples reach the laboratory, not on the order or collection date. Shipping is additional. WHL will confirm any test-specific exception; a combined panel follows its slowest component.

Read WHL’s general preparation and reporting guidance

Practical preparation tips

If fasting is requested, drink only plain water in your usual amounts. Do not have coffee, tea, juice, milk, energy drinks, sweets or chewing gum. Avoid smoking or vaping that morning. Book an early appointment and eat after collection.

For a planned blood test, avoid alcohol and unusually strenuous exercise for 24 hours, where practical, and sit quietly for about 15 minutes before collection. Tell WHL if you could not follow the preparation instructions.

Do not extend fasting or change prescribed medication on your own. Ask your clinician first if you have diabetes, need medicine with food, are pregnant, or are arranging testing for a child. WHL’s full test-specific instructions take priority.

Sources for this general preparation guidance
  • Mayo Clinic Laboratories — plasma amino acids
  • Mayo Clinic Laboratories — vitamin B6
  • Mayo Clinic Laboratories — B12 and folate
  • Mayo Clinic Laboratories — vitamins A and E
  • Mayo Clinic Laboratories — iron studies
  • NHS — fasting blood tests
  • EAS/EFLM — fasting and non-fasting lipids
  • EFLM/COLABIOCLI — preparation for blood collection

Other laboratories’ methods and preparation rules can differ. These sources support the general advice; WHL confirms the instructions for the method used for your test.

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