The grades of 3 Life Sciences Tools & Services stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

This is a strong week for ICON Plc (ICLR). The company’s rating climbs to A from the previous week’s B. ICON Plc provides contract clinical research services to the global pharmaceutical industry. The company also gets A’s in operating margin growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of ICLR stock.

Quintiles Transnational Holdings, Inc. (Q) boosts its rating from a C to a B this week. The company also gets A’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of Q stock.

This week, NeoGenomics, Inc. (NEO) pushes up from a B to a A rating. NeoGenomics, Inc. operates a network of cancer-focused testing laboratories providing genetic and molecular testing services to hospitals, pathologists, oncologists, urologists, other clinicians and researchers, and other laboratories in the United States. The company also gets A’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of NEO stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.