|Born||1977 (age 41–42)|
|Criminal status||On parole|
|Conviction(s)||November 22, 2013 (pleaded guilty)|
|Criminal charge||Obstruction of justice, tampering with evidence, perjury, falsification of academic records|
|Penalty||Three to five years in prison, two years' probation|
Annie Dookhan was born Annie Sadiyya Khan in San Fernando, Trinidad and Tobago in 1977. She moved to the United States when she was a child and eventually became a citizen. In 2003, she was hired as a chemist at the Hinton State Laboratory Institute in the Jamaica Plain neighborhood of Boston. She married Surrendranath Dookhan in 2004.
In June 2011, an evidence officer at the lab discovered that Dookhan had tested 95 samples without properly signing them out. Further investigation revealed that she had forged the initials of an evidence officer in her log book, and she was suspended from lab duties. However, she was still allowed to continue testifying in court until February 2012, when district attorneys throughout the Boston area were notified of the breach in protocol and Dookhan was placed on administrative leave. She resigned in March 2012.
During Dookhan's time at the Hinton lab, it had been run by the Massachusetts Department of Health's Office of Human Services. However, in a cost-cutting move, the Massachusetts General Court transferred control of the lab to the Massachusetts State Police forensics unit in 2011. The state police mounted a probe into the Dookhan case. The probe revealed that Dookhan's superiors had ignored red flags surrounding her before 2011. For instance, she reportedly tested over 500 samples per month—five times the normal average—even though her supervisors and colleagues claimed to have never seen her in front of a microscope, and that she frequently misidentified samples. Additionally, Dookhan's productivity remained steady after the Supreme Court of the United States ruled in Melendez-Diaz v. Massachusetts that chemists who perform drug tests in criminal cases can be subpoenaed to testify in person. According to an independent data analysis by NPR member WBUR in Boston, Dookhan's turnaround time for tests actually dropped from 2009 to 2011. The problem was severe enough that Governor Deval Patrick ordered the lab shut down.
In August, police interviewed Dookhan at her home in Franklin, where she admitted to altering and faking test results in order to cover up her frequent "dry labbing," or visually identifying samples without actually testing them. She even went as far as to add cocaine to samples in which no cocaine was present. She said she had been dry-labbing for as long as three years. At one point, she broke down, saying, "I messed up, I messed up bad. I don't want the lab to get in trouble."
On September 28, 2012, Dookhan was arrested and charged with obstruction of justice and falsification of academic records. The latter charge came because she had claimed both on her resume and in sworn testimony to have had a master's degree in chemistry from the University of Massachusetts at Boston. However, school officials revealed that Dookhan had no such degree, and had never taken master's level classes there.
On December 17, Dookhan was formally arraigned on 27 charges—17 counts of obstruction of justice, eight counts of tampering with evidence and one count each of perjury and falsification of records. Prosecutors alleged that whenever a second test failed to confirm the initial results, Dookhan would tamper with the vials to make them consistent with the inaccurate results obtained by her dry labbing. She was also charged with falsely certifying results that she knew to be compromised; these certifications were admitted as evidence in court.
On November 22, 2013, Dookhan was sentenced to three to five years imprisonment and two years probation by Judge Carol S. Ball in Suffolk Superior Court, after pleading guilty to crimes relating to falsifying drug tests. This was greater than the one-year sentence her defense requested but less than the five to seven-year sentence requested by the prosecution. However, Ball said that upward departure was merited due to the ramifications of Dookhan's misconduct. Ball wrote, "Innocent persons were incarcerated, guilty persons have been released to further endanger the public, millions and millions of public dollars are being expended to deal with the chaos Ms. Dookhan created, and the integrity of the criminal justice system has been shaken to the core."
Dookhan, Massachusetts Department of Correction inmate F81328, served her sentence at Massachusetts Correctional Institution – Framingham. By April 2016, she had been granted parole and was subsequently released from prison.
In January 2015, Benjamin Keehn, a prominent defense attorney with the Committee for Public Counsel Services, said that as many as 40,000 people could have been falsely convicted as a result of Dookhan's actions.
In May 2015, the Massachusetts Supreme Judicial Court ruled that defendants whose convictions on drug charges were based on evidence potentially tainted by Dookhan can pursue retrials without having to face more charges or tougher sentences.
On April 18, 2017, Massachusetts dropped more than 21,000 low-level drug criminal charges involving Dookhan. Out of the 15,570 cases involved in her work only 117 will be pursued according to Daniel Conley, the district attorney in Suffolk County, which includes Boston. 
- Scientific misconduct
- Joyce Gilchrist - Another former chemist, who admitted to falsifying evidence.
- "Annie Dookhan Pleads Guilty to Tampering with Evidence, Obstruction". Mass.gov. 22 November 2013. Retrieved 24 September 2018.
- "Crime Lab Scandal Leaves Mass. Legal System In Turmoil". Npr.org. Retrieved 24 September 2018.
- "Annie Dookhan chased renown on a path paved with lies". The Boston Globe. Retrieved 24 September 2018.
- "Archived copy". Archived from the original on 2014-01-02. Retrieved 2013-12-04.CS1 maint: Archived copy as title (link)
- Timeline of case from WBUR in Boston
- "Statement of Case against Dookhan" (PDF). S3.amazonaws.com. Retrieved 24 September 2018.
- Quijano, Elaine (2012-09-29). "Massachusetts lab tech arrested for alleged improper handling of drug tests". CBS News.
- Amico, Chris (2013-05-15). "With More Work, Less Time, Dookhan's Tests Got Faster". WBUR.
- Anderson, Karen (2012-08-30). "State Drug Lab Chemist's Actions Could Affect Thousands of Cases". WBZ-TV.
- "Interim Smmary of Annie Dookhan" (PDF). S3.documentcloud.org. Retrieved 3 December 2018.
- Arsenault, Mark (2012-09-28). "Bail set at $10,000 after arraignment of Annie Dookhan, chemist in state drug lab scandal". The Boston Globe.
- "More Charges For Mass. Chemist In Drug Lab Scandal". www.wbur.org. Retrieved 24 September 2018.
- "Archived copy". Archived from the original on 2013-12-30. Retrieved 2013-12-04.CS1 maint: Archived copy as title (link)
- "Annie Dookhan, former state chemist who mishandled drug evidence, sentenced to 3 to 5 years in prison". Boston.com. 22 November 2013. Retrieved 24 September 2018.
- "Inmate information from Vinelink and Massachusetts Department of Correction". Vinelink.com. Archived from the original on 30 December 2013. Retrieved 24 September 2018.
- "Annie Dookhan, Chemist At Center Of Mass. Drug Lab Scandal, Is Out Of Prison". www.wbur.org. Retrieved 24 September 2018.
- Annie Dookhan, key figure in state lab scandal, released from prison, Boston Globe, April 12, 2016
- ACLU argues for drug-crime defendants in Annie Dookhan saga, Boston Globe, January 9, 2015
- Trager, Rebecca. "Thousands of U.S. Convicts Can Get New Trials Because of Rogue Drug Lab Chemist". Scientific American. Retrieved 29 May 2015.
- Drug Lab Scandal Results in More Than 20,000 Convictions Dropped, NBC News, April 18, 2017