It has been about a month since the last earnings report for Qiagen (QGEN) . Shares have added about 1.1% in that time frame, underperforming the S&P 500.Will the recent positive trend continue leading up to its next earnings release, or is Qiagen due for a pullback? Before we dive into how investors and analysts have reacted as of late, let's take a quick look at the most recent earnings report in order to get a better handle on the important catalysts. QIAGEN Q4 Earnings Lag, Operating Margin ExpandsQIAGE ...