Dr Nur Suraya Jamalludin, 33, from the Pathology Department of the Kuala Lumpur Hospital (HKL), who confirmed the result of the cholinesterase test on Jong Nam, said the lack of the enzyme, which controls muscle movement, could cause wheezing.

She said from results of an analysis conducted by a science officer at the department, she could confirm that Jong Nam’s cholinesterase enzyme was not at the normal level, which was 344 units per litre.

Dr Nur Suraya, who is the 22nd witness, was responding to a question by deputy public prosecutor Wan Shaharuddin Wan Ladin during examination in chief in the trial of Indonesian Siti Aisyah, 25, and Vietnamese national Doan Thi Huong, 28, who are charged with four others still at large with murdering Jong Nam, 45, at the departure hall of klia2 at 9am on Feb 13 this year.

After confirming the result of Jong Nam’s cholinesterase enzyme, she handed it to her superior, chemical pathologist Dr Norashikin Othman.

Meanwhile, HKL forensic science officer Lai Phoh Soon, 31, said he carried out the flushing process of Jong Nam’s blood to obtain the serum for the analysis.

He said the serum, which is the liquid layer of the blood, was placed in a bottle labelled with the deceased’s name and then given to a science officer at the HKL’s Pathology Department, Nurulhuda Kaidar, 31, following an instruction by HKL head of Medical Forensic Department Dr Mohd Shah Mahmood last Feb 16.

The hearing before judge Azmi Ariffin continues tomorrow.