Weekly E-Mail newsletter For physicians in Internal Medicine, Cardiology, Geriatrics, Women's Health, and Adolescent Medicine News from hundreds of top industry sources It's what clinicians need to know It's FREE!       Privacy Information       SmartBrief and AJM will not rent, sell, or trade your e-mail address to any external entities -- ever. Click here to read our Privacy Policy.       About SmartBrief About The American Journal of Medicine, published by Elsevier About Elsevier Visit other Elsevier Health Science publications     Send AJMPlus story to a colleague. * Your Name * Your E-mail * Friend's E-mail Separate multiple addresses with commas.   Personal Message * Indicates required fields Terms and Conditions: You must submit valid e-mail addresses only. Use of e-mail addresses is subject to the terms of SmartBrief's privacy policy. Here's the story you're sending: D-dimer testing: When is it useful? This study found that the specificity of D-dimer testing in patients with suspected pulmonary embolism and decreased glomerular filtration rate is significantly decreased. Nonetheless, performing D-dimer tests is still useful because computed tomography scanning can be withheld in a significant proportion of these patients.  American Journal of Medicine, The (11/2009)