No hacemos audiometría verbal a menos que termine la timpanometría.

Yes. Hacemos is the present tense of hacer for nosotros: we do / we make.

In this sentence, though, hacer is being used in a professional or clinical sense, so hacemos audiometría verbal means something like:

• we do speech audiometry
• we perform speech audiometry
• we carry out speech audiometry

In Spanish, hacer is often used where English prefers perform, carry out, or administer.

This is very common in Spanish, especially in workplaces, clinics, offices, and customer service. Hacemos can be an institutional we, meaning:

• this is what we do here
• this is our procedure
• this is how the clinic operates

So even if one receptionist, nurse, or technician is talking, hacemos can refer to the staff, the clinic, or the procedure in general.

Because Spanish usually drops subject pronouns when the verb already shows who the subject is.

• hacemos already tells you the subject is we
• so nosotros hacemos is possible, but often unnecessary

Adding nosotros would usually give extra emphasis or contrast, like:

• Nosotros no hacemos audiometría verbal...
  = We don’t do speech audiometry... (maybe implying someone else does)

Without nosotros, the sentence sounds more neutral and natural.

A menos que means unless.

It introduces a condition that must be met before the main action can happen. So the structure is:

• No hacemos X a menos que Y
• We don’t do X unless Y

It can also feel close to except if in some contexts.

Because a menos que normally requires the subjunctive.

So after a menos que, Spanish uses:

• termine = present subjunctive not
• termina = present indicative

This is one of the standard triggers learners memorize:

• a menos que + subjunctive

Examples:

• No salgo a menos que me llames.
• No empezamos a menos que llegue el doctor.

So in your sentence, termine is correct because it follows a menos que.

Termine is the present subjunctive form of terminar.

In this sentence, it is third person singular, which can match:

• he
• she
• it
• you (formal)
• or a singular noun, such as la timpanometría

Here it goes with la timpanometría, so the idea is that the tympanometry finishes / is completed.

In Spanish, the subject can come after the verb much more easily than in English.

So these are both possible in Spanish:

• ...a menos que termine la timpanometría
• ...a menos que la timpanometría termine

The version with the verb first is very natural. Spanish often puts the subject after the verb, especially in clauses like this one.

Good question. Spanish often omits the article with a general direct object, especially after verbs like hacer when talking about activities, services, or procedures in a general way.

So:

• No hacemos audiometría verbal = We don’t do speech audiometry

This sounds like a general policy or procedure.

But la timpanometría is the subject of termine, and singular countable or specific nouns in subject position often appear with an article. So la sounds natural there.

You might also hear other variations depending on context, but this contrast is normal.

Because in Spanish, most adjectives usually come after the noun.

So:

• audiometría verbal not
• verbal audiometría

That is the normal adjective position in Spanish.

In English, adjectives usually come before the noun:

• verbal audiometry
• speech audiometry

In Spanish, the usual order is:

• noun + adjective

Yes, and in many real-life situations, hasta que may actually sound more straightforward if the idea is purely not until.

Compare:

• No hacemos audiometría verbal a menos que termine la timpanometría. = We don’t do speech audiometry unless the tympanometry is finished.

• No hacemos audiometría verbal hasta que termine la timpanometría. = We don’t do speech audiometry until the tympanometry is finished.

The difference is mainly one of nuance:

• a menos que emphasizes a condition / exception
• hasta que emphasizes time / sequence

In many practical contexts, both can point to a similar real-world result, but they are not exactly the same grammar.

Spanish often allows things like tests, meetings, classes, or procedures to be the subject of terminar.

So la timpanometría termina can mean:

• the tympanometry ends
• the tympanometry is finished
• the tympanometry gets completed

English often prefers a passive or a different structure, such as:

• until the tympanometry is completed
• until we finish the tympanometry

But Spanish is comfortable using terminar this way.

You may also hear alternatives like:

• hasta que se termine la timpanometría
• hasta que termine la prueba

Those are also possible depending on style and region.