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:4/28/2016)... First quarter 2016:   , Revenues amounted ... quarter of 2015 The gross margin was 49% (27) ... the operating margin was 40% (-13) Earnings per share ... operations was SEK 249.9 M (21.2) , Outlook   ... M. The operating margin for 2016 is estimated to ...
(Date:4/26/2016)... , April 27, 2016 ... the  "Global Multi-modal Biometrics Market 2016-2020"  report to ... ) , The analysts forecast the ... CAGR of 15.49% during the period 2016-2020.  ... number of sectors such as the healthcare, BFSI, ...
(Date:4/15/2016)... 15, 2016  A new partnership announced today ... underwriting decisions in a fraction of the time ... and high-value life insurance policies to consumers without ... With Force Diagnostics, rapid testing (A1C, Cotinine and ... (blood pressure, weight, pulse, BMI, and activity data) ...
Breaking Biology News(10 mins):
(Date:5/27/2016)... City, Missouri (PRWEB) , ... May 27, 2016 , ... ... Development Manager, Turf and Ornamental Products. , In his 15-year career with PBI-Gordon, Dave ... Herbicide Product Manager, where he was integral in the development and launch of many ...
(Date:5/27/2016)... NEW YORK , May 27, 2016 ... state, but investors playing in this space know that volatility ... this morning,s featured companies on ActiveWallSt.com: Synta Pharmaceuticals Corp. (NASDAQ: ... CTIC ), Lpath Inc. (NASDAQ: LPTN ), and ... now and gain access to the technical alerts for these ...
(Date:5/26/2016)... , May 26, 2016 Q BioMed ... it will be a featured presenter at the 5th Annual ... New York City at the Grand Hyatt ... , Q BioMed Inc. CEO, is scheduled to begin at ... the company,s business strategy, recent developments and outline milestones for ...
(Date:5/26/2016)... ... 26, 2016 , ... Kinder Scientific (KinderScientific.com), a leading animal ... the Company for the future. Kinder Scientific announces restructured ownership and additional ... appointed Chairman of the Board, Curtis D. Kinghorn has been appointed CEO/President and ...
Breaking Biology Technology: