DEAR DR. ROACH: I am 77 years old, and I’m concerned about getting a prostate biopsy. My last PSA test jumped from 2.25 to 3.75 ng/mL, and an MRI came back healthy and normal with a PI-RADS code of 2.

A nuclear stress test, also called myocardial perfusion imaging (MPI) or a thallium stress test, uses a radioactive tracer to show how blood flows through your heart muscles during exercise and at ...

Abnormal stress test results may suggest an underlying heart condition, such as coronary artery disease, or a blockage in the arteries supplying blood to the heart. Failing a stress test means you can ...

Aldolase helps your body turn sugar into energy. Most of it is stored in your muscles and liver. When these cells are damaged, they release aldolase into your blood. Measuring the amount of aldolase ...

When considering whether to approve a business loan, lenders usually look at both personal and business credit scores. If you have bad credit— or just don't want a hard credit inquiry that could lower ...

Check Into Cash is a direct lender that has been in business since 1993. It offers four loan types, including online payday loans, in-store title loans and in-store cash advances. Check Into Cash also ...

The way you endorse a check depends on how you want to use the check Kiara Taylor has worked as a financial analyst for more than a decade. Her career has involved a number of financial firms, ...

Cashier's checks cost more, but let you send more money. Money orders are cheaper and easier to buy, especially if you don't have a checking account. Money orders and cashier’s checks can each be ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Gene expression is the generation of a functional gene product from the information encoded by a gene, through the processes of transcription and translation. Gene products are often proteins, however ...

Gene expression profiling is the determination of the pattern of genes expressed, at the level of transcription, under specific circumstances or in a specific cell to give a global picture of cellular ...

Beating the upcoming summer heat starts with a clean AC filter. Here's how to make it part of your spring cleaning. David Watsky Managing Editor / Home and Kitchen David lives in Brooklyn where he's ...