Xét nghiệm ở bệnh viện.

It can be either, depending on context.

• As a noun, xét nghiệm means a medical test or testing
• As a verb-like expression, it can mean to test or to undergo testing

In Xét nghiệm ở bệnh viện, it works naturally as the main action of the phrase: doing or getting medical testing at the hospital.

You will also often see it in longer expressions such as:

• làm xét nghiệm = do a test / have a test done
• đi xét nghiệm = go get tested

Because Vietnamese often omits the subject when it is already understood from context.

So Xét nghiệm ở bệnh viện could appear as:

• a short note
• a schedule item
• an instruction
• a reply in conversation
• a caption or heading

English usually wants a subject more often, but Vietnamese is comfortable leaving it out.

If you want to make it explicit, you could say:

• Tôi đi xét nghiệm ở bệnh viện = I’m going to get tested at the hospital
• Anh ấy xét nghiệm ở bệnh viện = He gets tested at the hospital

By itself, it has no marked tense.

Vietnamese does not have to mark tense the way English does. Time is often understood from context, or added with time words or markers such as:

• đã = past
• đang = ongoing / present progressive
• sẽ = future

For example:

• Đã xét nghiệm ở bệnh viện = got tested at the hospital
• Đang xét nghiệm ở bệnh viện = is being tested at the hospital
• Sẽ xét nghiệm ở bệnh viện = will get tested at the hospital

So the bare sentence is neutral until context tells you when it happens.

Ở means at, in, or located at, depending on context.

In this sentence, ở bệnh viện means at the hospital or in the hospital.

Its job is to mark the location of the action:

• xét nghiệm = get tested / do testing
• ở bệnh viện = at the hospital

So the structure is basically:

action + location

Because Vietnamese does not use articles like a, an, and the the way English does.

So bệnh viện can mean:

• hospital
• a hospital
• the hospital

The exact meaning depends on context.

If Vietnamese wants to be more specific, it can add other words, for example:

• bệnh viện này = this hospital
• bệnh viện đó = that hospital
• một bệnh viện = a hospital

This is a very common question for English speakers.

Vietnamese writing uses spaces between syllables, not always between what English speakers think of as separate words. So bệnh viện is a compound noun made of two syllables that together mean hospital.

A lot of Vietnamese vocabulary works this way. So even though it is written with a space, you should learn bệnh viện as one vocabulary unit.

Not exactly.

• ở bệnh viện = at the hospital / in the hospital
  This is the most natural general location phrase here.
• trong bệnh viện = inside the hospital
  This puts more emphasis on being physically inside the building.

So if you just want to say where the testing happens, ở bệnh viện is the normal choice.

Yes.

• ở bệnh viện is the common, neutral, everyday choice
• tại bệnh viện is usually a bit more formal or more common in written, official, or news-like styles

Both can mean at the hospital.

So:

• Xét nghiệm ở bệnh viện = natural everyday wording
• Xét nghiệm tại bệnh viện = slightly more formal

Not always, but đi is very common when you mean go somewhere to get tested.

Compare:

• Xét nghiệm ở bệnh viện = testing at the hospital / get tested at the hospital
• Đi xét nghiệm ở bệnh viện = go to the hospital to get tested

Adding đi makes the idea of going for the purpose of testing clearer.

Without đi, the phrase is shorter and more neutral, and it can sound like a label, note, or reduced sentence.

The pattern is:

action + location

So:

• xét nghiệm = get tested / do testing
• ở bệnh viện = at the hospital

This is very normal Vietnamese word order. The main action comes first, and location information often comes after it.

You can think of it as similar to English:

• get tested at the hospital

Not exactly.

• xét nghiệm usually refers to medical or laboratory testing
• kiểm tra is broader and means check, inspect, or test in a more general sense

So in a medical context, especially for lab work, xét nghiệm is the more precise word.

For example:

• xét nghiệm máu = blood test
• kiểm tra sức khỏe = health checkup

So in Xét nghiệm ở bệnh viện, xét nghiệm specifically fits the medical-testing meaning very well.