I suggest combining it with the LEC or at least using the version with the extended criterion A question.
Excellent advice!
I highly recommend reading
PTSD Checklist for DSM-5 (PCL-5) on the National Center for PTSD website. It is concise and informative. That site is also where you can download:
Over the last 10 years my primary specialty has been
VA C&P exams for PTSD and other mental disorders. I and other C&P examiners (psychologists and psychiatrists) frequently review previous exams where a veteran was diagnosed with PTSD based
only on a PCL score and an unstructured interview.
Sometimes there are reliable records documenting a history of PTSD, in which case the PCL might be appropriate. (I would still use the CAPS and other evidence-based assessment measures, but reasonable minds can disagree.)
Very often, unfortunately, the evidence for a PTSD diagnosis is
sparse—and there may be
contradictory evidence—but the examiner nonetheless diagnoses PTSD.
~ Mark
P.S. Re: "evidence-based assessment" here are some helpful articles and book chapters:
Bornstein, Robert F. “Evidence-Based Psychological Assessment.”
Journal of Personality Assessment 99, no. 4 (July 4, 2017): 435–45. doi:10.1080/00223891.2016.1236343
Hunsley, John, and Eric J. Mash. “Evidence-Based Assessment.”
Annual Review of Clinical Psychology 3, no. 1 (April 2007): 29–51. doi:10.1146/annurev.clinpsy.3.022806.091419
Bornstein, Robert F., and Christopher J. Hopwood. "Introduction to Multimethod Clinical Assessment." In
Multimethod Clinical Assessment, edited by Christopher J. Hopwood and Robert J. Bornstein, 1–20. New York: Guilford, 2014.
Burchett, Danielle, and R. Michael Bagby. “Multimethod Assessment of Distortion: Integrating Data from Interviews, Collateral Records, and Standardized Assessment Tools.” In
Multimethod Clinical Assessment, edited by Christopher J. Hopwood and Robert J. Bornstein, 345–78. New York: Guilford, 2014.