Low Copy Number DNA and Forensic Statistical Tool fail Frye test

Low Copy Number (LCN) DNA and a mixture DNA interpretation have been a subject of parts of blog posts here in the past. On November 7, 2014, Brooklyn based Justice Mark Dwyer has issued an opinion the LCN DNA and a specific type of diagnostic and alleged statistical tool for the interpretation of mixture DNA […]

CODIS, NDIS, SDIS, Familial Searching (Partial Match and moderate stringency) and Arrestee and Offender Database Searches versus expungment

Are results expunged from the CODIS or SDIS databases and why should I care one way or another? Maybe you are like me. I like it when crimes are solved. I like it when the true perpetrator is arrested, fairly tried and convicted. I like that there are prisons to house the truly dangerous. But […]

DNA post-conviction-DA objections

DNA post-conviction-DA objections It is unfortunate when we read about District Attorney’s offices that object to DNA testing in post-conviction cases. They often cite that the prisoner is untimely in his or her request and there is no statutory basis for it. They argue that the conviction has become final. It seems in so arguing […]

Hands-on DNA Training for Lawyers

Hands-on DNA Training for Lawyers On November 15-17, 2013, the defense bar got a big boost in its quest to promote justice. In over 23 hours of hands on training, twenty attorneys assembled at Boise State University to learn DNA analysis. The course itself was taught by Dr. Greg Hampikian, Laura Wendell and Mike Davis. […]

The Forensic Lab Worker Retirement Plan Again: Screw up Tests, Skip Steps…. Retirement Life

Ahh yes. It’s time for our latest edition of “Lifestyles of the Newly Retired.” Here is another example of the greatest retirement plan in all of government. If you do bad science, with potential false convictions or undue exonerations, you are tampering with evidence. In all 50 states and in the federal system, tampering with […]

Chemical Measurement Process and The Calibration Function: How to best calibrate an instrument used in forensic science

The technical goal of any calibration related effort is t0 achieve a meaningful and valid CMP. According to The International Union of Pure and Applied Chemistry (IUPAC): Chemical Measurement Process (CMP): An analytical method of defined structure that has been brought into a state of statistical control, such that its imprecision and bias are fixed, […]

Retention of Biological Samples: In a DUI case, how long is long enough?

Suppose the following: You are driving home. You get stopped by the police. You are arrested for DUI. You are requested and give a sample of your blood. The blood goes to a laboratory and is analyzed. The results get transmitted to the police a few days later. The  police type it up a few […]

Amanda Knox Case: Judge Probably Understands Probability by Dr. Carrie Valentine, PhD

Judge Probably Understands Probability Carrie R. Valentine, Ph. D (biochemistry) A recent New York Times article reports that Italy’s Court of Cassation has overturned the acquittal of Amanda Knox for the murder of Meredith Kercher.[1] (Pictured Above: Amanda Knox post-release) Although Schneps and Comez acknowledge that the Court has not yet publicly explained the motivations […]

Ray Krone talks about the nightmare of innocence at the 2012 ACS Fall meeting (Forensic Science, Chemistry and the Law)

On August 20, 2012, the American Chemical Society at its biannual meeting held a special Presidential Seminar called “Innocence! The  Work of the Innocence Project.” It was funded by The McShane Firm, LLC and presented through the Chemistry and the Law Division and the Forensic Science, Chemistry and the Law subdivision. At the presentation, were three […]

Steven Barnes talks about the nightmare of innocence at the 2012 ACS Fall meeting (Forensic Science, Chemistry and the Law)

Here is the full video of the Steven Barnes account of actual innocence. On August 20, 2012, the Amer­i­can Chem­i­cal Soci­ety at its bian­nual meeting held a spe­cial Pres­i­den­tial Sem­i­nar called “Inno­cence! The  Work of the Inno­cence Project.” It was funded by The McShane Firm, LLC and pre­sented through the Chem­istry and the Law Divi­sion and the Foren­sic […]

Steven Barnes talks about the nightmare of innocence at the 2012 ACS Fall meeting (Forensic Science, Chemistry and the Law)

On August 20, 2012, the American Chemical Society at its biannual meeting held a special Presidential Seminar called “Innocence! The  Work of the Innocence Project.” It was funded by The McShane Firm, LLC and presented through the Chemistry and the Law Division and the Forensic Science, Chemistry and the Law subdivision. At the presentation, were three exonerees. […]