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The text suggests that analyzing a single hair can reveal drug presence, powerful substances, and recent dietary intake.

The analysis indicates that hair testing is effective for detecting drugs and certain substances but is not confirmed to accurately determine recent dietary intake from a single hair.

March 18, 2026 Language: en 3 claims analyzed

Individual Claims

86
True science
Examination of a single hair can establish whether a person had drugs in their blood.
Hair drug testing is well-supported by evidence, capable of detecting drug use history through hair biomarker analysis for up to three months. This method is widely used and accepted in forensic and occupational settings.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 90
Web Consensus Weight 50
Source Quality Score 85
Source Quality Weight 25
Llm Reasoning Score 80
Llm Reasoning Weight 25
Weighted Total 86
Evidence Summary 3 sources confirm hair tests reveal drug history
86
True science
Examination of a single hair can establish whether a person had other powerful substances in their blood.
Hair tests can detect a range of substances, including drugs and their metabolites, providing a history of substance exposure over approximately 90 days, as supported by medical and laboratory sources.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 90
Web Consensus Weight 50
Source Quality Score 85
Source Quality Weight 25
Llm Reasoning Score 80
Llm Reasoning Weight 25
Weighted Total 86
Evidence Summary 3 sources confirm hair tests detect various substances
28
Mostly False science
Examination of a single hair can establish what a person had eaten recently.
No definitive evidence confirms that a single hair can provide accurate dietary details. While hair analysis can indicate some nutritional markers, it is not reliable for assessing recent meals or detailed dietary intake.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 20
Web Consensus Weight 50
Source Quality Score 20
Source Quality Weight 25
Llm Reasoning Score 30
Llm Reasoning Weight 25
Weighted Total 28
Evidence Summary Sources do not confirm precise dietary analysis from hair

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