hair analysis


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hair analysis

Etymology: AS, haer + Gk, a loosening
chemical analysis of a hair sample to find possible evidence of exposure to a toxic substance. Molecules of lead compounds and other chemicals are absorbed and stored in hair shafts. Hair analysis is also used to determine possible causes of malnutrition. Samples for analysis are taken from areas close to the scalp to eliminate chances that toxic chemicals found in the hair may have been absorbed from air pollutants.
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 ?
He reported that the Army had "contracted for hair analysis in six cases in the last two years involving five African-American subjects.
In addition to the use of cutoff levels, hair analysis can use chemical wash procedures to remove any possible external contaminants and exclude the possibility of environmental exposure causing a false-positive.
And other forensic methods, such as hair analysis, were involved in about two-thirds of those wrongful convictions.
This includes hair analysis, which can detect drug use that occurred over a longer period of time than urinalysis can detect.
Reveal Sciences is a new personal care technology company specializing in tailored color changes for consumer products and personalized skin and hair analysis for the cosmetics and personal/home care industries.
Hair analysis is not an accurate way of assessing metal toxicity.
Over the next academic year, Ellis will cover areas such as colour correction, hair analysis and consultation and advanced cutting techniques.
One of the problems is that people go to so-called food allergists who use unreliable methods like hair analysis and food is blamed on the basis of no evidence at all.
There are two types of over-the-counter drug test--urine or hair analysis.
There are two types of over-the-counter drug tests -- urine and hair analysis.
The offerings include a hair analysis which is completed twice per year, 1-on-1 virtual consultations with hair professionals, customized hair care plan, salon booking portal with trusted stylists, products delivered based on your hair compatibility, exclusive content, regimens, and styling suggestions.