Sterile and Measuring Devices: Additional Evidence for Thailand Registration

1. Key takeaways

Beyond the routine CSDT modules, sterile devices in Thailand must provide additional evidence: a sterilisation process validation report, such as ethylene oxide sterilisation under ISO 11135 or radiation sterilisation under ISO 11137; packaging effectiveness validation; shelf-life validation data; and, where applicable, a description of the disposal or destruction method. Class 1 sterile devices must likewise submit a sterilisation report, which is an explicit item in the Class 1 simplified document list. Devices with a measuring function must submit a calibration report, an item expressly listed in the Class 1 simplified list, showing that Thai attention to measuring functions covers all risk levels. Biocompatibility evaluation under the ISO 10993 series applies to devices that contact the human body, and active devices must submit electrical safety and EMC evidence under the IEC 60601 series, while devices containing wireless technologies such as Bluetooth, Wi-Fi, cellular networks or RFID must additionally obtain NBTC approval. None of these obligations is optional, and none of them can be improvised late in the project, because each depends on testing or validation work that needs to be planned and scheduled like any other engineering activity.

• Sterile devices: sterilisation process validation report, ISO 11135 for ethylene oxide or ISO 11137 for radiation, plus packaging effectiveness validation and shelf-life validation data, and a disposal or destruction method description where applicable.
• Class 1 sterile devices: the sterilisation report is an explicit item in the Class 1 simplified list.
• Devices with measuring functions: a calibration report, expressly listed in the Class 1 simplified list as Calibration Report (For Medical Devices with Measuring Function); for Class 2-4 measuring devices, calibration and metrology evidence is usually placed in the verification and validation summary and the applicable standards list.
• Shelf-life data underpin the expiry date on the label; the B.E. 2568 (2025) labelling rules require the production date for products without an expiry date, or the expiry date for products that have one, together with the method of calculating the expiry date where applicable.
• Body-contacting devices: biocompatibility evaluation under the ISO 10993 series, a standard CSDT module rather than one exclusive to sterile devices, though sterile invasive devices almost always involve it.
• Active devices: electrical safety and EMC under the IEC 60601 series; devices with Bluetooth, Wi-Fi, cellular, RFID or other wireless technology must obtain NBTC approval.

2. Legal basis

The additional evidence obligations trace to several instruments. The Thai FDA website Class 1 document list names the sterilisation report and the calibration report, and the Thai FDA website Class 2-4 document list matrix governs the higher classes. The sterilisation standards are ISO 11135 for ethylene oxide sterilisation and ISO 11137 for radiation sterilisation. Biocompatibility follows the ISO 10993 series, electrical safety and electromagnetic compatibility follow the IEC 60601 series, and software follows IEC 62304. The labelling linkage comes from the MoPH labelling notification B.E. 2568 (2025), which requires the label to state the production date for products without an expiry date, or the expiry date for products that have one, and, for an expiry date, also the method by which it is calculated. Shelf-life validation data are the evidence supporting this statement: without validation data, the expiry date on the label has no basis. The NBTC approval requirement for wireless devices is covered in article 29 of this guide series.

3. Expert insights

The reliable way to catch every product-specific evidence obligation is to map product characteristics to additional evidence in a single table, resolved once at project start: sterile means sterilisation validation plus packaging effectiveness plus shelf-life; a measuring function means a calibration report; body contact means biocompatibility; powered means electrical safety plus EMC; wireless means NBTC; software means IEC 62304 plus the SaMD classification. The value of the table lies in when it is filled in. Teams that build it at project start discover every specialty evidence stream while testing and validation can still be scheduled; teams that skip it discover a missing dedicated validation only after the dossier has gone out, at which point the project stops and the calendar slips by the length of the missing study. Two characteristics deserve special vigilance because they hide in plain sight: measuring functions are often assumed away on Class 1 devices even though the calibration report is expressly named in the simplified list, and wireless modules are frequently embedded for convenience, such as data upload over Wi-Fi or RFID identification on consumables, without anyone connecting them to the NBTC requirement. A one-time screening conversation with engineering closes both gaps.

4. Practical recommendations

• At project start, complete the characteristics-to-evidence table: sterile, measuring function, body contact, powered, wireless, software, and record the corresponding evidence stream for each characteristic that applies.
• For sterile devices, schedule the ISO 11135 or ISO 11137 process validation, the packaging effectiveness validation, and the shelf-life validation data, and prepare the disposal or destruction method description where applicable.
• For Class 1 sterile devices, include the sterilisation report in the simplified list submission; for Class 1 devices with a measuring function, include the calibration report.
• For body-contacting devices, prepare the biocompatibility evaluation under the ISO 10993 series.
• For active devices, prepare electrical safety and EMC evidence under the IEC 60601 series, and screen for wireless modules early so the NBTC approval can be planned alongside the registration.
• For products carrying an expiry date, confirm the shelf-life validation data support the labelled expiry date and the stated calculation method required by B.E. 2568 (2025).

5. Verification checklist

• □ Verification basis date: 26 October 2026.
• □ Thai FDA website Class 1 document list, covering the sterilisation report and the calibration report.
• □ Thai FDA website Class 2-4 document list matrix.
• □ ISO 11135 for ethylene oxide sterilisation and ISO 11137 for radiation sterilisation.
• □ ISO 10993 series for biocompatibility.
• □ IEC 60601 series for electrical safety and EMC.
• □ IEC 62304 for software.
• □ MoPH labelling notification B.E. 2568 (2025), production date and expiry date labelling requirements.

How GRZAN can help. GRZAN provides medical device and IVD registration, quality system, authorised representative and local testing support across Southeast Asia, including Thailand. Our team prepares dossiers to ASEAN CSDT structure, manages submissions and deficiency responses with the Thai FDA, and supports post-market vigilance obligations. Business enquiries: info@grzanglobal.com