Vitamin B complex

Research records

Historical source snapshot. Not freshly verified, not a recommendation. Study findings, community accounts and app defaults are not interchangeable.

Publication suitability · 2026-10-15: Historical reference only; not a clinical verification. Clinical, regulatory, efficacy, safety and dose claims are not independently established by this review.

Vitamin B complex

Combined B vitamins. High-dose biotin within these can interfere with some lab immunoassays.

Evidence category: Reference only. This describes the source category, not approval or certainty.

Regulatory statement in source: Not separately recorded; do not infer approval from the evidence category.

Vitamin B complex products combine several B vitamins, often including biotin. Review articles explain that biotin from supplements interferes with laboratory immunoassays that rely on biotin-streptavidin binding. Depending on the assay design the result can be falsely high or falsely low, most often in thyroid and cardiac tests. Laboratories manage this by asking about supplement use and by handling affected samples differently. The sources are reviews of laboratory methods, not trials of B-complex supplements.

Benefits reported in the imported source

Risks and limits

• Biotin in these products interferes with lab immunoassays, most often thyroid and cardiac tests
• Results can read falsely high or falsely low depending on how the assay is built
• Laboratories rely on being told about supplement use to handle affected samples
• No evidence of benefit in the sources here, which are reviews of laboratory methods

Source bottom line: The sources here cover one thing only: biotin in B-complex products can distort common laboratory blood tests.

Uncertainty: Reference information only. Not medical advice.

Study protocols — reports, not instructions

No study protocol recorded in this snapshot. This does not establish that no study exists.

Community and practice descriptions

Accounts of a practice are not evidence of safety or effectiveness. Words such as “standard”, “safe” or “recommended” describe the source account, not verified consensus or this wiki’s advice. Commercial and self-published citations are retained for traceability, not vendor endorsement or independent clinical corroboration.

Pharmacokinetic context

No half-life recorded in this source snapshot. No value has been inferred.

Source references

• Immunoassay design and biotin interference (Dasgupta 2022)
• Biotin Supplementation—The Cause of Hypersensitivity and Significant Interference in Allergy Diagnostics
• Strategies for mitigating risk posed by biotin interference on clinical immunoassays (Gifford et al. 2019)
• NIH ODS: B vitamins (availability check 2026-10-15: source not retrieved; HTTP 403)