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How Does an Oral HIV Test Work?
health.howstuffworks.com/medicine/tests-treatment/oral-hiv-test.htm
A recently FDA-approved rapid HIV test (one that doesn't have to be sent to a laboratory for processing) can use blood, serum or oral fluids with equal accuracy.
How Does a Breathalyzer Work?
electronics.howstuffworks.com/gadgets/automotive/breathalyzer.htm
A roadside sobriety test of touching one's nose or walking a straight line cannot rule out a high blood alcohol concentration. That's why the Breathalyzer is such a game-changer. But how does a Breathalyzer work? Read on to find out!
10 Types of Metal (and We Don't Mean the Music)
science.howstuffworks.com/types-of-metal.htm
Metals are everywhere—in the wires in your walls, the pans in your kitchen, and even in your blood. These types of metal are defined by their atomic structure, properties, and how they interact with other elements.
How Ghouls Work
science.howstuffworks.com/science-vs-myth/strange-creatures/ghoul.htm
Blood-sucking vampires and brain-munching zombies tend to hog all the undead credit, but we think ghouls deserve a macabre article all their own. Read it -- if you dare.
Home Remedies for High Cholesterol
High blood cholesterol is a major cause of heart attacks. Learn what those cholesterol numbers mean, and read about the home remedies that can help get your cholesterol under control.
Can owning a pet help you live longer?
animals.howstuffworks.com/pets/live-longer-with-a-pet.htm
Research shows that owning a pet can help you live longer. Find out how pets can lower your blood pressure, prevent heart disease and save your life.
What's Your Vampire Name?
play.howstuffworks.com/quiz/whats-your-vampire-name
When you go to suck their blood, you should at least have a name! Take our quiz to find out which vampire name is perfect for you! You might just be surprised!
Why does anemia make people want to crunch on ice?
If you've got a constant compulsion to crunch on ice -- huge amounts of ice -- it could be a sign of anemia. What is it about having an abnormal number of red blood cells that makes ice so appealing?
How could someone with relatively healthy arteries be at risk for a heart attack?
Those with healthy arteries can still have a heart attack. Learn the two big reasons why people with healthy arteries can have a heart attack.
Aspirin 101
health.howstuffworks.com/medicine/medication/aspirin.htm
Aspirin and its relatives are used to relieve all kinds of ailments. Learn about the history and chemistry of aspirin, how aspirin works against pain and aspirin side effects.