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    National Biomonitoring Program

    CDC’s Division of Laboratory Sciences uses biomonitoring—measurements in human blood and urine—to identify harmful exposures or nutrition deficiencies in the U.S. population.

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    Clinical Standardization Programs

    CDC’s Clinical Standardization Programs make certain that the accuracy, precision, and other performance parameters of a laboratory test are improved and maintained to meet clinical needs.

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    Laboratory Quality Assurance Programs

    CDC’s Division of Laboratory Sciences works to standardize and improve the quality and accuracy of laboratory tests for environmental chemicals, nutritional indicators, heart disease and stroke, and newborn screening.

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    Laboratory Response Network for Chemical Threats (LRN-C)

    The Laboratory Response Network for Chemical Threats (LRN-C) is a national network of local and state public health laboratories that respond to chemical terrorism and other public health emergencies in the United States. CDC partners with the LRN-C to maintain specialized capabilities for analyzing human exposures to chemical threat agents, e.g., toxic metals and industrial chemicals. Established in 1999, the LRN-C has been ensuring laboratory preparedness and response capability for 20 years.

    Last Reviewed: March 17, 2023
    Source: Centers for Disease Control and Prevention
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          • Building laboratory capacity to assess folate status in populations
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        • Performance Verification Program for the Folate Microbiologic Assay
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