Navigation Links
NIST releases 2 new SRMs for monitoring human exposure to environmental toxins
Date:1/11/2012

The National Institute of Standards and Technology (NIST), in collaboration with the Centers for Disease Control and Prevention (CDC), has developed two new Standard Reference Materials (SRMs) for measurements of human exposure to environmental toxins. Used as a sort of chemical ruler to check the accuracy of tests and analytic procedures, the new reference materials replace and improve older versions, adding measures for emerging environmental contaminants such as perchlorate, a chemical that the Environmental Protection Agency has targeted for regulation as a contaminant under the Safe Drinking Water Act.

The CDC will use the new SRMs3668, "Mercury, Perchlorate, and Iodide in Frozen Human Urine" and 2668, "Toxic Elements in Frozen Human Urine"as quality controls for urine tests during their biennial National Health and Nutrition Examination Survey (see www.cdc.gov/nchs/nhanes.htm.)

Because sample collection is non-invasive and the test results reflect exposures as recent as two days, urine is preferred for clinical diagnostics and monitoring of toxic environmental chemicals. Once collected, samples are frozen while they await testing.

In order to generate comparable results among tests, best practices in clinical chemistry state that a reference material should closely mimic how a specimen would respond to these tests. The best way to achieve such close resemblance is to make the physical, chemical and biological properties of the reference material as close as possible to the specimen. NIST researchers developed these new SRMs to replace the freeze-dried SRMs 2670a, 2671a and 2672a because when the frozen urine SRM is thawed it matches the properties of clinical urine specimens much more closely than reconstituted freeze-dried urine SRM.

In addition to NIST, the CDC, Mayo Clinic and the New York State Department of Health made certification measurements of the two SRMs to ensure their relevance for the intended applications. The development of SRMs 2668 and 3668 reflects NIST's commitment to continually improve chemical metrology to improve the health of the nation.


'/>"/>

Contact: Mark Esser
mark.esser@nist.gov
301-975-8735
National Institute of Standards and Technology (NIST)
Source:Eurekalert

Related biology news :

1. NIST releases first certified reference material for single-wall carbon nanotubes
2. Neurotechnology Releases MegaMatcher Accelerator 4.0 for National-scale Fingerprint and Iris Biometric Identification
3. NOAA releases status on Florida Keys National Marine Sanctuary marine resources
4. NASA releases visual tour of Earths fires
5. ASAM releases new definition of addiction
6. National asthma genetics consortium releases first results
7. World Health Organization releases latest Dengue Bulletin
8. BGI releases a complete de novo E. coli O104 genome and details of their detection kit
9. Techne Corporation Releases Unaudited Third Quarter Results for Fiscal Year 2011
10. India releases tiger numbers as experts convene
11. WCS releases Birds of Brazil
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/16/2017)... , May 16, 2017  Veratad Technologies, LLC ( ... online age and identity verification solutions, announced today they ... Conference 2017, May 15 thru May 17, 2017, in ... and International Trade Center. Identity impacts ... and in today,s quickly evolving digital world, defining identity ...
(Date:4/19/2017)... 19, 2017 The global military ... is marked by the presence of several large global ... by five major players - 3M Cogent, NEC Corporation, ... for nearly 61% of the global military biometric market ... the global military biometrics market boast global presence, which ...
(Date:4/13/2017)... , April 13, 2017 According to a new ... Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, ... IAM Market is expected to grow from USD 14.30 Billion in 2017 ... (CAGR) of 17.3%. ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... At its national board meeting ... I. Sheikh, the co-founder, CEO and chief research scientist of Minnesota-based Advanced Space ... membership in ARCS Alumni Hall of Fame . ASTER Labs is a ...
(Date:10/11/2017)... BioMarketing, a leading provider of patient support solutions, has announced ... network, which will launch this week. The VMS CNEs will ... to enhance the patient care experience by delivering peer-to-peer education ... professionals to help women who have been diagnosed and are ... ...
(Date:10/10/2017)... , ... October 10, 2017 , ... San Diego-based team ... its corporate rebranding initiative announced today. The bold new look is part of ... the company moves into a significant growth period. , It will also expand its ...
(Date:10/10/2017)... Oct. 10, 2017 SomaGenics announced the receipt ... to develop RealSeq®-SC (Single Cell), expected to be the ... RNAs (including microRNAs) from single cells using NGS methods. ... need to accelerate development of approaches to analyze the ... "New techniques for measuring levels of mRNAs in ...
Breaking Biology Technology: