MTHFR Common Variants
Private MTHFR Common Variants testing in London for £320.99, analysing one inherited genetic marker with results expected in around 3 weeks.
Turnaround time
3 weeks
Biomarkers count
1
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Overview of the MTHFR Common Variants Test
The MTHFR Common Variants test analyses common inherited variants in the MTHFR gene, most notably C677T and A1298C.
The test assesses 1 genetic biomarker: MTHFR.
MTHFR stands for methylenetetrahydrofolate reductase.
The MTHFR enzyme participates in folate metabolism and helps generate a form of folate used in the remethylation of Homocysteine to Methionine.
Common MTHFR variants can alter enzyme activity.
The C677T variant has the clearest effect, particularly when two copies are inherited.
However, MTHFR variants are common in the general population and are not diseases by themselves.
Having one or two common variants does not mean that somebody has a clotting disorder, infertility, a neurological disease or an abnormal “methylation” condition.
The biochemical effect is better assessed by measuring Homocysteine, Folate and Vitamin B12 where clinically appropriate.
Adequate folate intake can substantially reduce the effect of common MTHFR variants on Homocysteine.
Importantly, common MTHFR variants are not considered a standard inherited thrombophilia.
Testing should not be used by itself to explain a DVT, recurrent miscarriage or other clotting event.
Established thrombophilia investigations address different abnormalities.
Because this is a genetic test, the inherited result does not change over time.
The test generally only needs to be performed once.
Interpretation should focus on what the genotype means biologically without attributing unrelated symptoms to the result.
What Does the MTHFR Common Variants Test Check?
The test identifies common inherited variants in the MTHFR gene. This test measures 1 specialist biomarker.
MTHFR
Analyses common MTHFR genetic variants, principally C677T and A1298C, which can influence enzyme activity and Homocysteine metabolism.
Who May Benefit From the MTHFR Common Variants Test?
MTHFR testing can provide genetic context where a defined folate or Homocysteine question exists.
People with persistently raised Homocysteine - MTHFR genotype can provide one piece of metabolic context.
People specifically referred for MTHFR genotyping - The result can clarify whether common variants are present.
People with an existing family MTHFR result who want their own genotype established - Common variants are inherited.
People undergoing specialist folate-metabolism investigation - Genetic information can complement biochemical testing.
People who want a one-time genetic result rather than repeated biochemical measurement - The inherited genotype remains stable throughout life.
People with previous MTHFR testing requiring confirmation from an accredited laboratory - A formal genetic result can provide documentation.
How to Prepare
The genetic result is stable throughout life.
Repeat MTHFR genotyping is generally unnecessary once a reliable result has been established.
Symptoms and Reasons to Consider the MTHFR Common Variants Test
Common MTHFR variants do not produce a specific symptom pattern.
Persistently raised Homocysteine - This is a more clinically relevant biochemical finding that can occasionally be influenced by MTHFR genotype.
An established family genetic result - Testing can determine whether the same variant was inherited.
A clinician-directed folate-metabolism investigation - Genetic testing can add context to Folate and Homocysteine results.
A previous consumer genetic result requiring laboratory confirmation - Formal testing can verify common variants.
Common MTHFR variants should not be used alone to diagnose a thrombophilia, recurrent pregnancy loss, infertility, fatigue, depression or a general “methylation disorder”.
Clinical decisions should be based on established biochemical and medical findings.
How to Book Your MTHFR Common Variants Test
The MTHFR Common Variants test can be booked privately for one-time genetic assessment.
Choose the MTHFR Common Variants
Select the MTHFR genetic blood test online.
Select your sample collection option
Choose an in-clinic blood draw or professional home or hotel phlebotomy where suitable.
Attend your appointment
A trained healthcare professional collects the required blood specimen for genetic analysis.
Laboratory analysis
Your sample undergoes analysis of MTHFR common variants.
Receive your results securely
Your authorised genotype result is delivered securely and can be interpreted alongside Homocysteine, Folate and Vitamin B12 where relevant.
When Will I Receive My Results?
The current London Blood Tests page lists a customer-facing turnaround of approximately 3 weeks.
Genetic analysis generally takes longer than routine biochemical blood testing.
The result does not need to be repeated later because the inherited genotype remains unchanged.
Understanding Your Results
A report may identify no tested variant, one copy of a variant or two relevant copies.
A heterozygous result means one altered copy of a tested variant is present.
A homozygous result means two copies of the same variant are present.
A compound-heterozygous result can occur when one copy of C677T and one copy of A1298C are detected.
These patterns can alter MTHFR enzyme activity to different degrees.
However, the genotype does not by itself show whether Homocysteine is elevated.
A normal Homocysteine result and adequate Folate/B12 status can be more clinically informative than the genetic finding alone.
MTHFR variants should not be interpreted as proof of increased clotting tendency or as a reason to start anticoagulant medication.
Why Book With London Blood Tests?
London Blood Tests provides private laboratory MTHFR genotyping for people requiring a confirmed genetic result.
Detects common MTHFR variants - The test assesses C677T and A1298C-related genetic patterns.
Provides a lifelong genetic result - The genotype does not change over time.
Can complement Homocysteine testing - Biochemistry shows whether the pathway is actually producing an abnormal measurable result.
Can complement Folate and B12 testing - Nutrient status materially influences Homocysteine metabolism.
Avoids overstating genetic risk - Common variants are interpreted as genetic traits rather than standalone diagnoses.
Useful for formal laboratory confirmation - Results can clarify previous consumer genetic findings.
Professional blood collection - Clinic and suitable home or hotel appointments are available.
Clear pricing - The MTHFR Common Variants test costs £320.99.
Private MTHFR Common Variants Blood Test in London
London Blood Tests provides private MTHFR Common Variants testing for people requiring laboratory-confirmed genetic assessment.
The test costs £320.99 and measures 1 genetic biomarker.
The current customer-facing turnaround is approximately 3 weeks.
The result is most useful when interpreted alongside Homocysteine, Folate and Vitamin B12 rather than treated as a diagnosis by itself.