Note · CMK 67/6
Should You Pay for Your Own Expert Opinion? What CMK 67/6 buys against a state laboratory report
Often yes, but only where it answers a technical question the state laboratory was never asked. CMK 67/6 lets you obtain a scientific opinion from your own specialist, on the event or on the report itself. No permission is needed and none is given: the court will not pause the case while he works, and the fee is yours. Against a sound report it changes nothing. Against a defective mandate it can change years.

What CMK 67/6 gives you, and what it does not
Article 67 of the Code of Criminal Procedure carries both documents in its heading — bilirkişi raporu, uzman mütalaası — and they are obtained in different ways. CMK 67/6 allows the suspect or defendant, defence counsel and the legal representative to obtain a scientific opinion from their own specialist: on the event that is the subject of the proceedings, for evaluation while the expert report is being prepared, or about that report once it exists. No application is needed. The paragraph closes with the sentence that governs your timetable — additional time may not be requested on that ground alone.
Set that against CMK 67/5. Once the examinations are complete a period is given so that a fresh expert examination can be requested or objections notified, and a refusal must be a reasoned decision given within three days. That route asks the court to order a second official examination: it costs nothing and the court may refuse. CMK 67/6 costs money and nobody can refuse it. Most files need both, in that order.
Your specialist is not an expert of the court: he is not drawn from the board list under CMK 64, nor paid from the Ministry tariff in CMK 72. He is what CMK 221/1 calls a teknik danışman, a technical adviser, and he is bound by the laboratory's own limit: CMK 67/3 keeps an expert to matters requiring special or technical knowledge and forbids the legal characterisations that belong to the judge. An opinion arguing that the file is possession rather than trafficking is a defence submission in a laboratory coat, and a court reads it as one.
Whether anything is left to examine
Before deciding what to commission, establish what still exists. Seized narcotics are governed by Law no. 2313, article 20, not by the Code alone.
- The substance is seized by a record and held by the prosecutor's office as evidence. A quantity sufficient for the analyses is taken as a sample and sent to the laboratory, so that type, quality and amount can be established definitively.
- Since the amendment of 28 March 2023, once the definitive reports are in, the sulh ceza judgeship may order confiscation at any stage of the investigation, provided that samples taken under the regulation are retained. The bulk then goes sealed to the local civil administration and, under 2313 m.21, is destroyed before a committee with the provincial prosecutor attending.
- The retained samples take a different route: they are confiscated with the judgment and handed over only after the judgment becomes final.
So by the time a family abroad has read the report, the bulk has usually been destroyed and the retained sample is the only material left. A fresh analysis has to be asked of the court under CMK 67/5; your specialist cannot obtain the sample himself. What he can always do is read the file, and in most drug cases that is where the answerable questions are — not least because CMK 66/7 requires a list and a count of the things given to the expert under seal, recorded in a tutanak, and obliges the expert to record the breaking and reapplication of the seals.
Questions worth paying for, and questions no chemist can answer
A privately funded opinion earns its cost when it answers a technical question the mandate never put, and is wasted when it merely disagrees with a conclusion the mandate did put.
| What you want answered | Can a specialist answer it |
|---|---|
| Whether the compound named falls inside a category in TCK 188/4-a | Yes. That paragraph names heroin, cocaine, morphine, base morphine, synthetic cannabinoid, cathinone and opioid and their derivatives, and amphetamine and derivatives, and increases the penalty by half. Whether a molecule sits inside "and derivatives" is a chemical question with a fixed consequence. |
| Whether the method used supports the identification stated, and how net weight and active-substance weight were reached | Yes, usually on the face of the report. The ordinary subject of a scientific opinion. |
| Whether seal numbers, counts and weights agree between the seizure record and the laboratory intake | Yes, on documents alone, without touching the substance. |
| Whether the quantity indicates supply rather than personal use, or whether you knew what was in the package | No. CMK 67/3 puts both outside an expert's remit. |
Because no extra time may be requested on this ground, the instruction has to go out while the CMK 67/5 period is still running. And CMK 178, which lets you bring a refused specialist to court yourself, carries its own limit: requests made in order to prolong the case are refused.
A paid opinion is not evidence until it is discussed
A written opinion sitting in the file is not yet evidence: CMK 217/1 allows the judge to base his decision only on evidence brought to the hearing and discussed in his presence.
CMK 68/3 applies the rules on hearing the court's expert to the specialist who prepared the opinion, so on request he can be called to explain his findings; under CMK 177/1 the petition asking for him to be summoned must reach the presiding judge at least five days before the hearing.
Then check the minutes. CMK 221/1 requires them to name the technical adviser, to contain the explanations of experts and technical advisers, and to record requests together with the reason where one is refused. Under CMK 222/1 they are the only proof of how the hearing was conducted, so an opinion handed up and not minuted is, in the file an appeal court later reads, an opinion never produced. CMK 230/1-b then requires the reasoned judgment to state what evidence was relied on and what rejected, and CMK 289/1-h makes a court decision restricting the defence right, on a matter important to the judgment, an absolute breach of law — where the appeal stages begin.
Who writes the laboratory report, and why type, weight and purity do three different jobs, is set out on the forensic drug report page. Where those findings move a file between the paragraphs of TCK 188 belongs with drug trafficking, and possession and personal use are dealt with under drug offences.
Three questions that come first
The report is two pages and states no method. Is that enough to build an opinion on?
Can the court simply ignore what my specialist wrote?
I am abroad. Can the family instruct a specialist, and is the money recoverable?
Turkish terms on this page3 terms
The file is written in Turkish. These are the words you will see in it, with the provision behind each.
- sulh ceza hâkimliği — criminal judgeship of peace
- The judge who takes the decisions a judge must take during the investigation — remand, judicial control, search orders — and who hears objections to them (Law no. 5235, art. 10).
- bilirkişi — court-appointed expert
- An expert whose opinion is taken where a question needs special or technical knowledge (CMK 63/1). Not used for questions a judge can answer with ordinary legal knowledge.
- tutanak — official record
- The written minute of what happened — a search, a statement, a seizure. What is in the tutanak is what the file will treat as fact.
Where this leads
Reach the duty desk
Tell us where the person is and what they have been told. An enquiry commits you to nothing. If it is urgent, message or call rather than write.