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I've heard tha hair analysis test for toxicologly purposes may be accurate for up to ten years, that is, it will expose any 'doses' from ten years prior to the testing. Is there any truth to that????
The quackery category could perhaps be applied to a theoretical hair analysis service article, but since the science supporting the validity of hair analysis in general is pretty much taken for granted, there's no reason to apply it to this article. In fact, the only criticism of hair analysis services is from over 20 years ago. -- Lee Hunter 20:10, 7 December 2006 (UTC)
This discussion is copied to Talk:Hair analysis (alternative medicine), and can continue there. -- Fyslee 10:28, 9 December 2006 (UTC)
This article would do well to add Sampling, Processing, Analytical methods sections, starting with an extract of the ATSDR paper, updated of course.
This minor point, Finally there is the problem that hair will be up to two weeks old meaning that the data obtained may not reflect the current state of the person the hair was taken from, moved here, might belong in Sampling, prefer shorter with other richer content.-- TheNautilus 08:50, 9 December 2006 (UTC)
I'm new to Wikipedia, so I didn't want to edit the article but I'm not sure that the points made in the hair alcohol testing section are wholly true:
A few of the laboratories in the UK that i'm aware of do not section hair for a month by month analysis due to the potential for such markers to be leeched out of the hair over time. Examples of this are:
Can I recognise a pattern of abuse? No, because we do not section the hair month by month and carry out periodic analysis. Our research has shown this is unsound scientific practice because the markers can migrate along the hair shaft. http://www.surescreen.com/picture.php?prodid=HAAK
Unlike testing hair samples for drug misuse, it is not yet possible to rule out the effects of normal hygiene practices such as shampooing when analysing alcohol consumption over a period of many months. http://www.tricho-tech.co.uk/pages/dalcohol.htm
As in previous investigations, concentrations of FAEE were also found in hair of teetotallers (Auwärter et al., 2001Go). http://alcalc.oxfordjournals.org/cgi/content/full/39/1/33
I think that it is also not true to note that the more of a biomarker is present, the more alcohol you have consumed. This surely varies depending on the unique metabolism of the individual - i.e some people's bodies break down the alcohol better than others.
The diagram seems to suggest that the concentration of alcohol in the various biological samples is measured and plotted against time. This contrasts with the text above it which suggests that biological markers are detected (and not alcohol). Due to the differing ways in which people metabolise alcohol it is impossible to quantify how much of a substance they have consumed from simply detecting biological markers, and thus the graph is flawed.
Can you determine how much alcohol a person has had monthly? No. Although we will give a value in our report, we can only say that the value exceeds our interpretation of the cut off level we have set, which is 60 grams of alcohol per day over a protracted period. We cannot interpret how much alcohol was actually consumed. To do so would be scientifically unsound because alcohol is metabolised in slightly different ways by different people.
All of this information might also influence the text on hair alcohol testing which is on the Drug Testing page. —Preceding unsigned comment added by Djae ( talk • contribs) 14:10, 9 October 2007 (UTC)
This article says quite a lot about drug intake and heavy metal poisoning, but not really anything about the very interesting applications of hair analysis I was hoping to read about. See for example this news report, which gives detailed information based on forensic analyis of hair such as "the owner visited an area between Valencia and Almeria in eastern Spain and the Marseille to Perpignan area of southern France for up to six days, some eleven weeks before the hair was cut." It's fascinating that such detailed information can be obtained. Similarly, Wikipedia's article on Ötzi the Iceman, which is what led me here, states that analysis of his hair was used to investigate his diet in the months before his death, and also indicated that he'd been involved in copper smelting. It would be really great if someone could expand this article to discuss this kind of thing. The Ötzi article also places him near a specific Italian village in his youth on the basis of isotopes in his tooth enamel. Anyone know anything about this kind of forensic analysis? 79.68.202.189 ( talk) 12:10, 21 December 2007 (UTC)
Thank you for your suggestion. When you feel an article needs improvement, please feel free to make those changes. Wikipedia is a wiki, so anyone can edit almost any article by simply following the edit this page link at the top. The Wikipedia community encourages you to be bold in updating pages. Don't worry too much about making honest mistakes — they're likely to be found and corrected quickly. If you're not sure how editing works, check out how to edit a page, or use the sandbox to try out your editing skills. New contributors are always welcome. You don't even need to log in (although there are many reasons why you might want to). WLU ( talk) 15:07, 21 December 2007 (UTC)
I removed the section on alcohol hair testing. It was a duplicate of Drug test#Hair testing though that has now been edited. I am not happy with duplicate text in different articles while the quality of the text is also in need of modification. I think a section on drug testing using haoir is appropriate though and will add one very soon. Thanks, ♫ SqueakBox talk contribs 18:37, 22 June 2010 (UTC)
I am trying to find out how long a hair 5 panel takes. I received the results in two hours and it indicated positive for cocaine. I had another hair follicle test done two days later (by a different company) and it came back negative. I have never touched cocaine and am wondering how the "positive" test result came about. — Preceding unsigned comment added by 166.147.72.15 ( talk) 20:18, 28 July 2011 (UTC)
harry potter was written by j.k rowling and has seven books in the series she is one of the most famous authers on the planet and her bookes have been written in many different languges across the world. — Preceding unsigned comment added by 86.26.242.33 ( talk) 14:56, 16 December 2011 (UTC) How exactly is this relevent?
Hair can't be tested for drugs beyond 90 days. Please show me a lab that can give you definitive results from a hair sample for over 90 days.
This is complete nonsense and impossible. The first sentence or second should be changed to a couple months not i.e. 1 year.
73.173.253.83 ( talk) 23:02, 9 July 2015 (UTC)
here is another lab
only 90 day detection
https://www.omegalabs.net/hair-testing-service/hair-testing-faqs/other-services.cmsx
73.173.253.83 ( talk) 23:06, 9 July 2015 (UTC)
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==Wiki Education assignment: Seminars in Forensic Science==
This article was the subject of a Wiki Education Foundation-supported course assignment, between 11 January 2022 and 15 April 2022. Further details are available
on the course page. Student editor(s):
Dvigna (
article contribs). Peer reviewers:
Kristinapham.
This article was the subject of a Wiki Education Foundation-supported course assignment, between 8 January 2024 and 30 April 2024. Further details are available
on the course page. Student editor(s):
Enatti0108 (
article contribs).
— Assignment last updated by Lorrriana ( talk) 23:10, 15 April 2024 (UTC)
This is the
talk page for discussing improvements to the
Hair analysis article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find medical sources: Source guidelines · PubMed · Cochrane · DOAJ · Gale · OpenMD · ScienceDirect · Springer · Trip · Wiley · TWL |
![]() | This article is rated C-class on Wikipedia's
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|
![]() | Ideal sources for Wikipedia's health content are defined in the guideline
Wikipedia:Identifying reliable sources (medicine) and are typically
review articles. Here are links to possibly useful sources of information about Hair analysis.
|
I've heard tha hair analysis test for toxicologly purposes may be accurate for up to ten years, that is, it will expose any 'doses' from ten years prior to the testing. Is there any truth to that????
The quackery category could perhaps be applied to a theoretical hair analysis service article, but since the science supporting the validity of hair analysis in general is pretty much taken for granted, there's no reason to apply it to this article. In fact, the only criticism of hair analysis services is from over 20 years ago. -- Lee Hunter 20:10, 7 December 2006 (UTC)
This discussion is copied to Talk:Hair analysis (alternative medicine), and can continue there. -- Fyslee 10:28, 9 December 2006 (UTC)
This article would do well to add Sampling, Processing, Analytical methods sections, starting with an extract of the ATSDR paper, updated of course.
This minor point, Finally there is the problem that hair will be up to two weeks old meaning that the data obtained may not reflect the current state of the person the hair was taken from, moved here, might belong in Sampling, prefer shorter with other richer content.-- TheNautilus 08:50, 9 December 2006 (UTC)
I'm new to Wikipedia, so I didn't want to edit the article but I'm not sure that the points made in the hair alcohol testing section are wholly true:
A few of the laboratories in the UK that i'm aware of do not section hair for a month by month analysis due to the potential for such markers to be leeched out of the hair over time. Examples of this are:
Can I recognise a pattern of abuse? No, because we do not section the hair month by month and carry out periodic analysis. Our research has shown this is unsound scientific practice because the markers can migrate along the hair shaft. http://www.surescreen.com/picture.php?prodid=HAAK
Unlike testing hair samples for drug misuse, it is not yet possible to rule out the effects of normal hygiene practices such as shampooing when analysing alcohol consumption over a period of many months. http://www.tricho-tech.co.uk/pages/dalcohol.htm
As in previous investigations, concentrations of FAEE were also found in hair of teetotallers (Auwärter et al., 2001Go). http://alcalc.oxfordjournals.org/cgi/content/full/39/1/33
I think that it is also not true to note that the more of a biomarker is present, the more alcohol you have consumed. This surely varies depending on the unique metabolism of the individual - i.e some people's bodies break down the alcohol better than others.
The diagram seems to suggest that the concentration of alcohol in the various biological samples is measured and plotted against time. This contrasts with the text above it which suggests that biological markers are detected (and not alcohol). Due to the differing ways in which people metabolise alcohol it is impossible to quantify how much of a substance they have consumed from simply detecting biological markers, and thus the graph is flawed.
Can you determine how much alcohol a person has had monthly? No. Although we will give a value in our report, we can only say that the value exceeds our interpretation of the cut off level we have set, which is 60 grams of alcohol per day over a protracted period. We cannot interpret how much alcohol was actually consumed. To do so would be scientifically unsound because alcohol is metabolised in slightly different ways by different people.
All of this information might also influence the text on hair alcohol testing which is on the Drug Testing page. —Preceding unsigned comment added by Djae ( talk • contribs) 14:10, 9 October 2007 (UTC)
This article says quite a lot about drug intake and heavy metal poisoning, but not really anything about the very interesting applications of hair analysis I was hoping to read about. See for example this news report, which gives detailed information based on forensic analyis of hair such as "the owner visited an area between Valencia and Almeria in eastern Spain and the Marseille to Perpignan area of southern France for up to six days, some eleven weeks before the hair was cut." It's fascinating that such detailed information can be obtained. Similarly, Wikipedia's article on Ötzi the Iceman, which is what led me here, states that analysis of his hair was used to investigate his diet in the months before his death, and also indicated that he'd been involved in copper smelting. It would be really great if someone could expand this article to discuss this kind of thing. The Ötzi article also places him near a specific Italian village in his youth on the basis of isotopes in his tooth enamel. Anyone know anything about this kind of forensic analysis? 79.68.202.189 ( talk) 12:10, 21 December 2007 (UTC)
Thank you for your suggestion. When you feel an article needs improvement, please feel free to make those changes. Wikipedia is a wiki, so anyone can edit almost any article by simply following the edit this page link at the top. The Wikipedia community encourages you to be bold in updating pages. Don't worry too much about making honest mistakes — they're likely to be found and corrected quickly. If you're not sure how editing works, check out how to edit a page, or use the sandbox to try out your editing skills. New contributors are always welcome. You don't even need to log in (although there are many reasons why you might want to). WLU ( talk) 15:07, 21 December 2007 (UTC)
I removed the section on alcohol hair testing. It was a duplicate of Drug test#Hair testing though that has now been edited. I am not happy with duplicate text in different articles while the quality of the text is also in need of modification. I think a section on drug testing using haoir is appropriate though and will add one very soon. Thanks, ♫ SqueakBox talk contribs 18:37, 22 June 2010 (UTC)
I am trying to find out how long a hair 5 panel takes. I received the results in two hours and it indicated positive for cocaine. I had another hair follicle test done two days later (by a different company) and it came back negative. I have never touched cocaine and am wondering how the "positive" test result came about. — Preceding unsigned comment added by 166.147.72.15 ( talk) 20:18, 28 July 2011 (UTC)
harry potter was written by j.k rowling and has seven books in the series she is one of the most famous authers on the planet and her bookes have been written in many different languges across the world. — Preceding unsigned comment added by 86.26.242.33 ( talk) 14:56, 16 December 2011 (UTC) How exactly is this relevent?
Hair can't be tested for drugs beyond 90 days. Please show me a lab that can give you definitive results from a hair sample for over 90 days.
This is complete nonsense and impossible. The first sentence or second should be changed to a couple months not i.e. 1 year.
73.173.253.83 ( talk) 23:02, 9 July 2015 (UTC)
here is another lab
only 90 day detection
https://www.omegalabs.net/hair-testing-service/hair-testing-faqs/other-services.cmsx
73.173.253.83 ( talk) 23:06, 9 July 2015 (UTC)
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Cheers.— InternetArchiveBot ( Report bug) 05:58, 23 January 2018 (UTC)
==Wiki Education assignment: Seminars in Forensic Science==
This article was the subject of a Wiki Education Foundation-supported course assignment, between 11 January 2022 and 15 April 2022. Further details are available
on the course page. Student editor(s):
Dvigna (
article contribs). Peer reviewers:
Kristinapham.
This article was the subject of a Wiki Education Foundation-supported course assignment, between 8 January 2024 and 30 April 2024. Further details are available
on the course page. Student editor(s):
Enatti0108 (
article contribs).
— Assignment last updated by Lorrriana ( talk) 23:10, 15 April 2024 (UTC)