Važeće lekarsko uverenje je spremno.

Because they agree with uverenje, which is a neuter singular noun.

In Serbian, adjectives must match the noun in:

• gender
• number
• case

Here:

• uverenje = neuter, singular, nominative
• so the adjectives also appear in neuter singular nominative:
  • važeće = valid
  • lekarsko = medical / doctor’s
  • spremno = ready

So the pattern is:

• važeće lekarsko uverenje
• je spremno

Everything is matching uverenje.

The dictionary forms are:

• lekarski = medical, doctor’s
• važeći = valid, in force

They change form to agree with the noun.

For a neuter singular noun like uverenje, they become:

• lekarsko
• važeće

So:

• lekarski pregled = medical exam (masculine noun)
• lekarska potvrda = medical certificate/note (feminine noun)
• lekarsko uverenje = medical certificate (neuter noun)

And similarly:

• važeći pasoš = valid passport
• važeća dozvola = valid permit
• važeće uverenje = valid certificate

Here važeće means valid, currently in force, or still officially acceptable.

It comes from the verb važiti, which means:

• to be valid
• to apply
• to be in effect

So važeće lekarsko uverenje means a medical certificate that is still officially valid, not expired or outdated.

Je is the 3rd person singular present tense of biti (to be).

The sentence structure is:

• Važeće lekarsko uverenje = the valid medical certificate
• je = is
• spremno = ready

So literally:

• The valid medical certificate is ready.

Unlike in some Serbian sentences where to be can be omitted, here je is normally needed because it links the subject to the predicate adjective spremno.

Because spremno must agree with uverenje, which is neuter singular.

Compare:

• Dokument je spreman. = The document is ready.
  (dokument is masculine)
• Potvrda je spremna. = The certificate is ready.
  (potvrda is feminine)
• Uverenje je spremno. = The certificate is ready.
  (uverenje is neuter)

So spreman / spremna / spremno all mean ready, but the ending changes depending on the noun.

No. Serbian does not have articles like a/an or the.

So Važeće lekarsko uverenje je spremno could be understood as:

• A valid medical certificate is ready
• The valid medical certificate is ready

Which one sounds best depends on the context. In real life, the context usually makes it clear.

Not exactly. They are related, but not always interchangeable.

• uverenje often means an official certificate or attestation
• potvrda often means confirmation, certificate, or note

In administrative language, lekarsko uverenje is a very common phrase for a medical certificate issued by a doctor or medical institution.

So while both can sometimes be translated as certificate, uverenje can sound a bit more formal or official in certain contexts.

Lekarsko uverenje is the more natural and established phrase for a medical certificate in many everyday and administrative contexts.

• lekarski = relating to a doctor
• medicinski = medical, relating to medicine more generally

So:

• lekarsko uverenje sounds like the standard bureaucratic phrase
• medicinsko uverenje is possible in some contexts, but it is usually less idiomatic for this exact expression

A learner should treat lekarsko uverenje as a fixed, useful phrase.

Yes, Serbian word order is more flexible than English word order, but not every order sounds equally natural.

The most neutral version here is:

• Važeće lekarsko uverenje je spremno.

You could also hear:

• Lekarsko uverenje je spremno.
• Uverenje je spremno.

If the context already makes valid obvious, speakers may drop važeće.

Adjectives normally come before the noun, so lekarsko uverenje is standard. Putting them after the noun would sound marked or unusual in this kind of sentence.

A rough pronunciation guide is:

• važeće ≈ VA-zheh-cheh

A few useful sound notes:

• ž sounds like the s in measure
• ć is a soft ch sound, softer than English ch
• e is always pronounced clearly, not reduced like in English

So the word has three clear syllables:

• va-že-će

Because both adjectives describe uverenje:

• važeće = valid
• lekarsko = medical / doctor’s
• uverenje = certificate

So together:

• važeće lekarsko uverenje = valid medical certificate

This is very normal in Serbian. Multiple adjectives can come before a noun, just as in English:

• new official document
• valid medical certificate

Yes, spremno can mean ready, and the exact nuance depends on context.

In an office or administrative setting, je spremno often means:

• it has been prepared
• it is completed
• it is ready for pickup/use/submission

So in practice, this sentence likely means something like:

• Your valid medical certificate is ready or
• The valid medical certificate has been prepared and is ready

Context tells you whether ready means available, completed, or prepared.