Find HHS-certified laboratories who may conduct drug testing for federal agencies and specific federally regulated industries. Current Laboratory Lists January 2021 List of Certified Laboratories and IITFs (PDF | 249 KB) January 2021 Certified Lab Listing by State (PDF | 423 KB) December 2020 List of Certified Laboratories and IITFs (PDF | 241 KB) December 2020 Certified Lab Listing by State (PDF | 107 KB) November 2020 List of Certified Laboratories and IITFs (PDF | 222 KB) November 2020 Certified Lab Listing by State (PDF | 107 KB) October 2020 List of Certified Laboratories and IITFs (PDF | 249 KB) October 2020 Certified Lab Listing by State (PDF | 423 KB) September 2020 List of Certified Laboratories and IITFs (PDF | 225 KB) September 2020 Certified Lab Listing by State (PDF | 107 KB) August 2020 List of Certified Laboratories and IITFs (PDF | 236 KB) August 2020 Certified Lab Listing by State (PDF | 85 KB) July 2020 List of Certified Laboratories and IITFs (PDF | 232 KB) July 2020 Certified Lab Listing by State (PDF | 85 KB) June 2020 List of Certified Laboratories and IITFs (PDF | 237 KB) June 2020 Certified Lab Listing by State (PDF | 85 KB) May 2020 List of Certified Laboratories and IITFs (PDF | 237 KB) May 2020 Certified Lab Listing by State (PDF | 420 KB) April 2020 List of Certified Laboratories and IITFs (PDF | 242 KB) April 2020 Certified Lab Listing by State (PDF | 420 KB) March 2020 List of Certified Laboratories and IITFs (PDF | 272 KB) March 2020 Certified Lab Listing by State (PDF | 422 KB) February 2020 List of Certified Laboratories and IITFs (PDF | 250 KB) February 2020 Certified Lab Listing by State (PDF | 422 KB) January 2020 List of Certified Laboratories and IITFs (PDF | 249 KB) January 2020 Certified Lab Listing by State (PDF | 353 KB) Archived Lab Lists (by Laboratory) for 2019 December 2019 List of Certified Laboratories and IITFs (PDF | 274 KB) December 2019 Certified Lab Listing by State (PDF | 201 KB) November 2019 List of Certified Laboratories and IITFs (PDF | 276 KB) November 2019 Certified Lab Listing by State (PDF | 201 KB) October 2019 Certified Laboratories and IITFs (PDF | 77 KB) Updates to October 2019 Certified Laboratories and IITFs (PDF | 282 KB) October 2019 Certified Lab Listing by State (PDF | 202 KB) September 2019 Certified Laboratories and IITFs (PDF | 824 KB) September 2019 Certified Lab Listing by State (PDF | 202 KB) August 2019 Certified Laboratories and IITFs (PDF | 284 KB) August 2019 Certified Lab Listing by State (PDF | 57 KB) July 2019 Certified Laboratories and IITFs (PDF | 288 KB) July 2019 Certified Lab Listing by State (PDF | 202 KB) June 2019 Certified Laboratories and IITFs (PDF | 172 KB) June 2019 Certified Lab Listing by State (PDF | 201 KB) May 2019 Certified Laboratories and IITFs (PDF | 227 KB) May 2019 Certified Lab Listing by State (PDF | 58 KB) April 2019 Certified Laboratories and IITFs (PDF | 204 KB) April 2019 Certified Lab Listing by State (PDF | 60 KB) March 2019 Certified Laboratories and IITFs (PDF | 202 KB) March 2019 Certified Lab Listing by State (PDF | 60 KB) February 2019 Certified Laboratories and IITFs (PDF | 171 KB) February 2019 Certified Lab Listing by State (PDF | 203 KB) View archived lab lists. View lab lists for years prior to 2014.