Navigation Links
NIST releases 2 new SRMs for monitoring human exposure to environmental toxins

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

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
National Institute of Standards and Technology (NIST)

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:
(Date:11/16/2015)... Nov 16, 2015  Synaptics Inc. (NASDAQ: ... solutions, today announced expansion of its TDDI product ... touch controller and display driver integration (TDDI) solutions ... These new TDDI products add to the previously-announced ... TD4302 (WQHD resolution), and TD4322 (FHD resolution) solutions. ...
(Date:11/10/2015)...  In this report, the biomarkers market ... type, application, disease indication, and geography. The ... consumables, services, software. The type segments included ... biomarkers, and validation biomarkers. The applications segments ... drug discovery and development, personalized medicine, disease ...
(Date:11/2/2015)...  SRI International has been awarded a contract of ... to the National Cancer Institute (NCI) PREVENT Cancer Program ... modern testing and support facilities, and analytical instrumentation to ... studies to evaluate potential cancer prevention drugs. ... Drug Development Program is an NCI-supported pipeline to bring ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... 2015 Studies reveal the differences ... and pave the way for more effective treatment for one ...   --> --> ... problems in cats, yet relatively little was understood about the ... have been conducted by researchers from the WALTHAM Centre for ...
(Date:11/25/2015)... DIEGO , Nov. 25, 2015  Neurocrine Biosciences, ... Kevin Gorman , President and CEO of Neurocrine Biosciences, ... Healthcare Conference in New York . ... to visit the website approximately 5 minutes prior to ... A replay of the presentation will be available on ...
(Date:11/25/2015)... IN (PRWEB) , ... November 25, 2015 , ... ... (AMA) and the Organization of Black Aerospace Professionals (OPBAP) has been formalized with ... and other AMA team leaders met with OPBAP leaders Capt. Karl Minter and ...
(Date:11/25/2015)... 2015 The Global Genomics ... professional and in-depth study on the current state ... ) , The report ... definitions, classifications, applications and industry chain structure. The ... markets including development trends, competitive landscape analysis, and ...
Breaking Biology Technology: