hair analysis


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The use of scalp hair as a primary analytical specimen
Mainstream medicine Hair analysis is of limited usefulness in trace element analysis
Quackery Hair analysis is allegedly useful for evaluating health and nutritional status, protein and vitamin levels
Substance abuse The use of samples of hair to detect chronic drug abuse
Methods RIA, EIA, GC/MS
Drugs detected Amphetamines, cocaine, heroin
Levels of detection 10 pg or 10 ng/mg of hair
Toxicology The most reliable use of hair analysis is to detect chronic heavy metal poisoning—e.g., arsenic, lead, mercury

hair analysis

The use of scalp hair as primary analytic specimen Mainstream medicine HA is of limited usefulness in trace element analysis  Substance abuse The use of samples of hair to detect chronic drug abuse Methods RIA, EIA, GC/MS Drugs detected Amphetamines, cocaine, heroin Levels of detection 10 pg or 10 ng/mg of hair Toxicology The most reliable use of HA is to detect chronic heavy metal poisoning–eg, arsenic, lead, mercury

hair a·nal·y·sis

(hār ă-nali-sis)
Testing for retrospective purposes when blood and urine can no longer be expected to contain a particular contaminant; most widely used in forensic toxicology and environmental toxicology; used controversially in alternative medicine.
References in periodicals archive ?
Teaming up with the Shanghai Advanced Research Institute--and everyone knows how much the Chinese respect privacy issues--Schwarzkopf researchers developed My Specialist Hair Analysis, a program that uses advanced microscopy to examine the structure of the hair, and uses the data to create specific formulas.
A simple hair analysis can easily identify the condition of your hair and determine if you are currently experiencing hair loss." Once the specific issue has been identified, several treatment routes can be pursued.
One UK-based medical practitioner who spoke to me revealed that the DNA test can be easily manipulated (if there's an external influence or pressure) and Nepal still lags since the nation doesn't have the technology to find out about the culprits from hair analysis testing.
Other hair analysis techniques have been studied, including liquid chromatography coupled mass spectrometry (LC-MS).
In the domain of hair analysis, external contamination has also been a critical point during its development.
The NIAID also recommends against basophil histamine release/activation, lymphocyte stimulation, hair analysis, allergen-specific IgG, cytotoxicity assays, electro-dermal test (Vega), and mediator release assay (LEAP diet) food sensitivity testing, because they lack scientific evidence.
Illicit drug hair analysis were evaluated, as well as demographics, periconceptual exposures, and nutritional biomarkers.
Experts have long acknowledged that a positive identification is not possible with microscopic hair analysis. Instead, examiners testify that a crime scene exemplar was "consistent with" a hair sample from the de-fendant.
(21) In 2009--twenty years after he was arrested--Tribble read an article about the exoneration of Donald Gates, who had been convicted of murder after the FBI conducted microscopic hair analysis that identified Gates as the perpetrator.
From a diagnostic standpoint, we had hair analysis evaluation of trace and toxic elements, dark field microscopy, EAV and energetic diagnosis, kinesiology muscle testing, thermography, plethysmography, blood food allergy screening, and unproven cancer blood screening.
An objective way of investigating a drug use history is through hair analysis. Drugs circulating in the bloodstream are trapped in the forming hair when it keratinizes and thus produces a temporal map of a person's drug use [27].