Tak, mam skierowanie na badanie krwi.

Skierowanie means a referral — usually a medical referral from a doctor, allowing or instructing you to have a test, see a specialist, or get a procedure done.

So mam skierowanie literally means I have a referral.

In medical contexts, this is a very common word in Polish.

Because Polish uses mam (I have) to express possession, just like English.

• mam = I have
• skierowanie = a referral

So:

• Mam skierowanie = I have a referral

You would not use jestem here, because jestem means I am, and a referral is something you possess, not something you are.

The preposition na is often used in Polish when talking about being sent/referred for a test, exam, treatment, or procedure.

So:

• skierowanie na badanie = a referral for an examination/test
• skierowanie na badanie krwi = a referral for a blood test

This is a very standard Polish pattern:

• skierowanie na RTG
• skierowanie na badanie
• skierowanie na konsultację

In this sentence, na is the natural preposition after skierowanie.

Because after na in this meaning, Polish usually takes the accusative case.

The noun badanie is neuter, and for many neuter nouns, the nominative and accusative forms are identical.

So:

• nominative: badanie
• accusative: badanie

That is why you see na badanie.

Because krew (blood) changes form here.

• basic form: krew
• genitive form: krwi

In Polish, phrases like badanie czego? often use the genitive case for the thing being examined.

So:

• badanie krwi = literally examination/test of blood
• natural English translation: blood test

This is a very common pattern:

• badanie moczu = urine test
• badanie wzroku = eye test
• badanie słuchu = hearing test

Yes. Literally, badanie krwi is examination/test of blood.

But in natural English, you would normally translate it as blood test.

This is a good example of how Polish often uses a noun + genitive structure where English prefers a compound noun.

Yes, Polish word order is more flexible than English.

The most neutral version is:

• Tak, mam skierowanie na badanie krwi.

But you may also hear:

• Mam skierowanie na badanie krwi.
• Na badanie krwi mam skierowanie.
  This sounds more marked, with emphasis on for a blood test.

In most everyday situations, the original sentence is the most natural and straightforward.

Not always. Tak means yes, so it is only needed if you are answering a yes/no question or confirming something.

For example:

• Czy ma pani skierowanie?
• Tak, mam skierowanie na badanie krwi.

If you are just stating the information without replying to anyone, you would usually say:

• Mam skierowanie na badanie krwi.

So Tak depends on the context.

Correct — Polish has no articles like a or the.

So mam skierowanie na badanie krwi can mean:

• I have a referral for a blood test
• I have the referral for the blood test

The exact meaning depends on context.

This is one of the big differences from English.

A rough pronunciation guide is:

skierowanie ≈ skyeh-roh-VAH-nyeh

A few points:

• ski here is not like English ski
• ie often makes a ye-like sound
• the stress is normally on the second-to-last syllable in Polish

So the stress is on:

• skie-ro-WA-nie

Polish pronunciation is more regular than English, but this word can still feel tricky at first.

Yes, it is completely natural and neutral.

It sounds like something a patient would say at:

• a clinic
• a laboratory
• a hospital reception desk
• a doctor’s office

It is neither especially formal nor informal — just standard everyday Polish for a medical context.

You might be understood, but badanie krwi is much more standard and natural in everyday Polish medical usage.

• badanie krwi = the normal phrase for blood test
• analiza krwi sounds more technical or less common in ordinary speech

So if you are learning a practical phrase to use in Poland, badanie krwi is the best choice.

Skierowanie is in the accusative case, because it is the direct object of mam.

However, this is one of those nouns where the nominative and accusative look the same.

So:

• nominative: skierowanie
• accusative: skierowanie

That means you do not see a visible change, even though grammatically it is functioning as an object.

Usually, no — not if you mean for a blood test in general.

The standard phrase is:

• na badanie krwi

Why not badania?

• badania can be plural (tests) or a different singular case, depending on context
• here, after na, you want the singular accusative of badanie, which is badanie

So:

• skierowanie na badanie krwi = referral for a blood test
• skierowanie na badania krwi would sound odd or would suggest a different structure

For a learner, it is best to memorize the whole chunk:

• skierowanie na badanie krwi

It could answer questions like:

• Czy ma pan/pani skierowanie?
  Do you have a referral?

• Na jakie badanie ma pan/pani skierowanie?
  What test do you have a referral for?

• Ma pan/pani skierowanie na badanie krwi?
  Do you have a referral for a blood test?

So the sentence is very practical in real-life medical conversations.