This week, 4 Health Care Equipment & Supplies stocks are worse, according to the Portfolio Graderdatabase. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Alere Inc.’s (ALR) rating weakens this week, dropping to a D versus last week’s C. Alere Inc. develops and manufactures patient diagnosis, monitoring, and health management products and services for cardiology, infectious diseases, toxicology, diabetes, oncology, and women’s health in the United States and internationally. For more information, get Portfolio Grader’s complete analysis of ALR stock.

This is a rough week for Veracyte Inc (VCYT). The company’s rating falls to F from the previous week’s D. The company also gets F’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of VCYT stock.

This week, Viveve Medical Inc’s (VIVE) rating worsens to a D from the company’s C rating a week ago. The company also gets F’s in earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of VIVE stock.

Vermillion, Inc. (VRML) slips from a D to a F this week. Vermillion, Inc. engages in the discovery, development, and commercialization of diagnostics tests that help physicians to diagnose, treat, and improve outcomes for patients. The company also gets F’s in sales growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of VRML 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.