GIST:  "The state chemist at the center of the drug lab scandal that led to more than 1,000 criminal cases being dismissed or not prosecuted is due back in court. Annie Dookhan is facing a long list of criminal charges, including tampering with evidence, obstruction of justice and perjury for allegedly faking test results. Dookhan is due back in Suffolk Superior Court on Wednesday. Last week the judge hearing the case said she won’t impose a sentence of more than three to five years if Dookhan pleads guilty. Prosecutors are seeking up to seven years in return for a guilty plea. Dookhan’s lawyer has asked for leniency."