this is a little off topic, should b under uterine cancer and pap smear.
But, oh well ...

1. I know pap smear should given to girl who already have sex before. But virgin are allowed to do pap smear or not ? (by the law/term & condition from government health department or hospital)

Virgins are not recommended to have pap smear.
It'll be very traumatizing and hurtful!

2. My best friend who suspected have uterus cancer already done pap smear after adviced by doctor but she is a virgin. So can this incident happen ? (by the law/term & condition from government health department or hospital)

Uterine cancer and cervical cancer are two very different things.
Pap smear screens for cervical cancer not uterine cancer.
You can not diagnose uterine cancer from pap smear!! ( oh well, unless the uterine cancer is huge and sloughs off the cells to the cervical canal!)
Risk factor for uterine cancer is obesity, single , never give birth before, late menopause etc...

3. If pap smear should given to girl who already have sex before, then how a virgin can test for uterus cancer ?

Good question.
Actually, there are no screening test for uterine cancer..
The doctor will check for it only when he is suspicious of you developing it.
But, most uterine cancer patients come very late.
Normally they consult the traditional med pplz.. which is kinda sad..

Hope this helps yungseng

However, in http://www.wrongdiagnosis.com/u/uterine_cancer/intro.htm show that uterine cancer can be test by pap smear. So any comments ? (Sorry not to offend you but I just want to clear my confuse only)
What you saw was this izit?
"Diagnostic Tests for Uterine Cancer
# Physical exam
# Pelvic exam
# Pap smear "


Personally, I'm surprised to see that stated there!
Why?

1. It has been studied that pap smear's "diagnostic sensitivity is
highest (BEST) for (detecting cervical cancer) invasive endocervical adenocarcinoma and
lowest (not reliable) for diagnosis of (uterine cancer) endometrial adenocarcinoma."
- taken from a research paper published in 2000 Diagnostic Cytopathology.

So this means that, it is not the screening tool of choice because chances to miss uterine cancer is HIGH.
Since it chances to miss it is HIGH, doctors do not use it on uterine cancer at all -

2. Uterine cancer (endometrial cancer) means that the endometrium (cells) is the lining of the uterus is cancerous.
This sits far above the cervix.
Logically,
a Pap smear doesn't test it
It was designed to look for the cervical cells.
Unless like i said in the previous post, it is a large huge cancer bulk that is shedding its cells into the cervical canal! Then at this time the cancer which would be very very advanced, and it would be very obvious to the doctor that you are having uterine cancer.
This time around, the doctor would have used the ultrasound ( which is less invasive) to look into your abdomen instead of sticking a wooden spatula into your private parts.

The doctor will check for it only when he is suspicious of you developing it.

How to check ? By what exam / test ?

1. Ultrasound of the uterus and the surrounding area

Another questions :
1. Will virgin get uterine cancer ?
Research have shown that people who are obese, smokes, single, never got pregnant before has a higher chance.

2. Will virgin get cervical cancer ?
The risk is lower because they are not exposed to HPV which causes 80-90% of cervical cancers.