Rosen and Barkin's 5-Minute Emergency Medicine Consult by 
Ferri's Best Test : A Practical Guide to Clinical Laboratory Medicine and Diagnostic Imaging by 
Ferri's Practical Guide : Fast Facts for Patient Care by The following are some government resources search forinformation on particular drugs: DailyMed; PillBox; Drug Information Portal (NLM), U.S Food and Drug Administration
FirstConsult
FirstConsult is a component of ClinicalKey. It contains article that are peer-reviewed and frequently updated. Strength of evidence and cited references support the recommendations.
Follow the link below to ClinicalKey, To the left of the search box is an orange rectangle containing "ALL." Click on this and select FirstConsult. Add your search terms, then select the article you want to read. The resulting page may include sections from several ebooks as well as the FirstConsult article itself. ClinicalKey
Diagnosaurus: From Access Medicine. Search this site by disease or symptom to retrieve possible differential diagnoses.
Rational Clinical Examination: The articles in this series of systematic reviews from JAMA delineate definitive diagnostic strategies for patients presenting with various symptoms.
Duke University Health System Laboratory Test Catalogue: Information about procedures at DUHS, normal values, and some interpretive information about test results.
Lab Tests Online: A peer-reviewed site with lots of information about lab tests, why they are done, and what the results may mean.From the American Association for Clinical Chemistry.
The Patient History : An Evidence-Based Approach to Differential Diagnosis by 
