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What Is a Graves Speculum?

By Maggie Worth
Updated: Mar 03, 2024

A Graves speculum is an instrument used by gynecologists during a pelvic examination. It is designed to spread the walls of the vagina so that the doctor can view the cervix. It is one of several available specula for this purpose and is one of the most commonly used.

In order to properly inspect the vaginal canal and cervix, the walls of the canal must be parted enough to allow a clear visual assessment. The Graves speculum accomplishes this by using two rounded "blades" to lift the tissue away from the center of the canal. A ring in the center of the instrument provides a "window" to the cervix.

The blades of a Graves speculum are curved, allowing them to fit more naturally into the vaginal canal. The device is inserted with the blades closed. The blades are then parted by means of a manual screw. As the blades move farther apart, they create the space through which the doctor can assess the inside of the vagina.

Doctors will also need a light source in order to perform a proper inspection. Often, this light comes from an independent source that can be angled according to the doctor's needs. Some Graves specula however, include attached lights, which are usually adjustable as well.

Graves specula come in a variety of sizes so that the doctor can choose the most appropriate instrument according to the weight, condition, and sexual history of the patient. They vary in length from 3.5 inches to 5 inches (about 8.75 cm to 12.75 cm). They are made of metal, most often stainless steel, and should be fully sterilized between uses.

For a general exam, the speculum often is coated with a lubricant to ease discomfort. Some lubricants can interfere with test results, however, so if the doctor intends to take tissue samples, she will either use a non-contaminating lubricant or use none at all. Discomfort associated with use of a Graves speculum should be minimal for most women. Intense discomfort can be a sign of a more serious condition.

Development of the Graves speculum and other speculum types significantly advanced the capability of doctors to diagnose and treat gynecological conditions. The ability to perform a complete visual inspection allows the doctor to identify abnormalities that may be undetectable by touch, such as discoloration, spotting, or other issues. Such signs may indicate an easy-to-treat problem, such as an infection, but may also provide early warning signs of serious diseases, such as cervical cancer.

The Health Board is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
By ElizaBennett — On Dec 23, 2011

@rugbygirl - I'm sorry your family is having such a tough time. It sounds like there are a lot of issues going on. The mom may be overly emotional over the idea of her "little girl" being sexually active, and the daughter probably just doesn't want to talk about it.

But she *must.* A girl who won't let the doctor examine her shouldn't be having sex, of course. A good starting place might be either Planned Parenthood or a doctor who specializes in working with adolescents. Schedule an appointment for the teen to just *talk* - assure her that she will not be asked to take her clothes off at this visit. The doc can go over birth control options with her, etc. A pelvic exam can come later, if necessary, once the girl is more comfortable.

I'm not sure if she needs a pelvic exam in general, but she does *not* need a Pap, and it could be harmful for her to have one. ACOG (American Congress of Obstetricians and Gynecologists) recommends waiting until age 21, even for girls who are sexually active. The reason is that before that age, the body can pick up HPV but resolve it on its own. Having a Pap could produce an abnormal result that could lead to unnecessary testing - some of which can impact childbearing. Tell your sister(?) that the Pap needs to wait.

By rugbygirl — On Dec 22, 2011

When should a girl start having pelvic exams? A teenage niece of mine is going fifteen rounds with her mother over this right now. The mother says that as the teen is sexually active, she needs a full pelvic exam with a Pap test. The teen is terrified of the exam, particularly the vaginal speculum, and is refusing to go.

The mother went so far as to drag her to the doctor, but of course the doctor would not do an exam on a teen patient who refused to have it.

Emotions are running high here. What's the recommendation? Any suggestions?

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