A month has gone by since the last earnings report for Quest Diagnostics (DGX) . Shares have added about 8.2% in that time frame, outperforming the S&P 500.Will the recent positive trend continue leading up to its next earnings release, or is Quest Diagnostics due for a pullback? Well, first let's take a quick look at its latest earnings report in order to get a better handle on the recent drivers for Quest Diagnostics Incorporated before we dive into how investors and analysts have reacted as of late.Quest ...