Elina Tenhunen

Medical Devices

MSc in Neuroscience & Physiology, Biology

Elina Tenhunen

Elina Tenhunen works at Measurlabs as a medical device testing expert. Her main focus is coordinating customer projects related to EU MDR compliance, ISO 10993 standards, and medical device packaging testing.

Before joining Measurlabs, Elina worked in quality assurance in the pharmaceutical industry for five years, familiarizing herself with European regulations, GMP guidelines, and biological analysis techniques.

Elina holds a master’s degree in biology, with physiology and neuroscience as major subjects. Her master’s thesis focused on neurological disease modeling with CRISPR/Cas9 gene editing technology.

Articles in other media

Elina has written about medical device testing for industry publication Lab Worldwide:

Elina’s latest articles in our blog

Elina Tenhunen
Elina Tenhunen

February 21, 2025

Navigating medical device packaging testing according to ISO 11607

ISO 11607-1 and ISO 11607-2 lay down internationally recognized requirements for the packaging systems of terminally sterilized medical devices.

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Navigating medical device packaging testing according to ISO 11607
Elina Tenhunen
Elina Tenhunen

January 22, 2025

Cleaning validation of reusable medical devices: how to fulfill EU and FDA requirements?

Rigorous cleaning validation - conducted according to international standards - is crucial to ensure safety and obtain regulatory approval for reusable devices.

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Cleaning validation of reusable medical devices: how to fulfill EU and FDA requirements?
Elina Tenhunen
Elina Tenhunen

June 4, 2024

The role of the Biological Evaluation Plan (BEP) in the biocompatibility evaluation of medical devices

Preparing the BEP before large-scale testing starts helps companies choose the most appropriate testing procedure, which in turn helps minimize animal testing.

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The role of the Biological Evaluation Plan (BEP) in the biocompatibility evaluation of medical devices

Read articles by our experts and guest authors on the practical implications of regulations, scientific advancements, and the ideal uses of different analysis methods.

Elina’s top testing services

Biological evaluation plan (BEP)

ISO 10993-1
A biological evaluation plan (BEP) is a critical part of assessing the safety of a medical device. It involves a detailed examination of various aspects such as the device's design & structure, its material composition, manufacturing process & potential contaminants, the intended use, existing test results, and clinical history. The BEP ensures that the device undergoes sufficient biocompatibility testing, with parameters selected from the ISO 10993-1 standard. As a manufacturer, you will need to have a BEP during the regulatory approval process to demonstrate the safety of your medical device. The BEP should be developed during the initial design phase of the medical device. At this stage, manufacturers can identify potential biological risks associated with the device's intended use, materials, and components. A new BEP or updates to the existing one may also be needed if changes are made to the device's design or material composition at a later point. At Measurlabs, we can provide a BEP for a range of medical devices while also guiding manufacturers throughout the process. Do not hesitate to contact us if you are developing a new device, seeking regulatory approval, making changes to an existing product, conducting post-market surveillance, or performing preclinical testing.  We are also happy to create an offer for biocompatibility testing according to the BEP, as well as a biological evaluation report (BER) to summarize the results of the biological evaluation.
6,400 €
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Chemical characterization of medical devices by ISO 10993-18

ISO 10993-18
Chemical characterization by the ISO 10993-18 standard is performed to identify the constituents of a medical device and to estimate and control the risks associated with its chemical composition. The test is a key part of assessing the biocompatibility of medical devices. Chemical characterization includes the estimation of substances released under simulated or exaggerated laboratory conditions (extractables) or the detection of actually released substances (leachables) by the medical device during clinical use. Applicable methods may include HS-GC (volatile organic compounds), GC-MS (semi-volatile organic compounds), LC-MS (non-volatile organic compounds), and ICP-MS (inorganic elements). Suitable tests, solvents, and analysis methods are chosen according to the device's composition, intended contact time, and site. We provide a range of chemical characterization tests based on the market area (MDR, FDA) and quality requirements (GLP). The tests are always customized for the product. Any chemicals detected above the concentrations established to be safe require further evaluation, typically through a toxicological risk assessment (ISO 10993-17). The starting price is based on the chemical characterization of volatile organic compounds (GLP, FDA).
5,200 €
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Bioburden testing by ISO 11737-1, aerobic bacteria and fungi

ISO 11737-1
The term bioburden describes the presence of microorganisms on a product, raw material, or surface. Bioburden testing plays a crucial role in the quality control of medical devices, pharmaceutical products, and their components. This analysis follows the ISO 11737-1 standard to detect populations of viable microorganisms on a product before sterilization, thus indicating the microbiological cleanliness of the product. ISO 11737-1 is recognized in the EU as a harmonized medical device standard and by the FDA as a consensus standard. This makes it the recommended way to evaluate bioburden under the EU MDR and the FDA 510(k) premarket submission process. This example testing package includes the following: Testing of 5 identical specimens, Detecting the presence of aerobic bacteria and and fungi (yeasts and molds), Validating the bioburden determination technique, Results expressed as total CFU/test product (CFU=colony forming units), Tests under GLP. We can also offer a custom bioburden test package for your needs, especially for large sample volumes. Please ask our experts for a quotation and estimated turnaround time.
769 €
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Bacterial endotoxins - LAL test according to USP <85> or EP 2.6.14

Ph. Eur. 2.6.14, USP 85
Bacterial endotoxin tests, also known as Limulus Amebocyte Lysate (LAL) tests, are used to detect endotoxins in pharmaceuticals to evaluate the pyrogenic potential of the material, especially for batch release. Endotoxins are components of gram-negative bacteria that are common contaminants in manufacturing processes. Several methods can be used to detect and quantify bacterial endotoxins: Kinetic turbidimetric assay, Chromogenic method, Kinetic chromogenic assay , Gel-clot method. The displayed price includes one routine LAL assay per sample with a chromogenic method according to USP <85> or EP 2.6.14 (Ph. Eur 2.6.14). Please ask for a quote for the validation. We can also offer custom bacterial endotoxin test packages tailored to your needs, especially for large sample volumes. Please ask for a quote for your samples!
395 €
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