To find out, I took Quest's Cortisol Blood Stress Hormone Test, which was offered to me for free. After my blood test, I had many residual questions about cortisol. To learn more and get my facts ...

GRAND RAPIDS, Mich. (WOOD) — PFAS has been making headlines for years now, and based on everything we know about PFAS contamination, it will be several more years before the chemical exposure is ...

University Hospitals completes sale of about 50 outpatient lab services locations in Ohio to New Jersey-based Quest.

Laboratory operator Quest Diagnostics beat Wall Street estimates for fourth-quarter profit and revenue on Thursday, helped by a robust appetite for its diagnostic tests.

To find out, I took Quest's Cortisol Blood Stress Hormone Test, which was offered to me for free. After my blood test, I had many residual questions about cortisol. To learn more and get my ...