What Is In Vitro Diagnostics Complete Guide to IVD Testing in Healthcare
In vitro diagnostics (IVD) are tests or examinations conducted on samples recovered from the human body such as blood or tissue samples. “In vitro,” meaning “in glass,” indicates that these tests are generally performed using equipment like test tubes or petri dishes.
IVD is non-invasive and while some tests are used in professional healthcare settings, others can be used at home by consumers.
This article provides an overview of IVD and explains what it is. It covers the types of IVD tests with examples, their benefits, and the regulations governing these devices. It also answers some frequently asked questions.
Types of In Vitro Diagnostic Devices
- Laboratory-based tests
- Point-of-care tests
Laboratory-based Tests
For laboratory-based tests, samples are sent to a laboratory for analysis. This is typically required for complex conditions such as cancer, HIV, and hepatitis.
Examples of these tests and devices include:
- Blood grouping devices
- Human genetic tests
- Immunoassays
- Next-generation sequencing tests
Point-of-Care Tests
This type of test is performed at or near the point of patient care. It allows for faster diagnosis and speeds up treatment decision-making.
In areas with limited access to laboratory equipment and infrastructure, point-of-care tests can help improve patient care and reduce the cost of testing.
Examples of this type of test include:
- Blood glucose self-monitoring systems
- COVID-19 tests
- Pregnancy tests
- Urinalysis test strips
Benefits of In Vitro Diagnostics
IVD is used to monitor an individual’s overall health. It can detect and prevent diseases and other medical conditions. It can also be used in precision medicine to identify the best treatment for certain patients.
Early Detection of Diseases
According to a paper by APACMed regarding diagnostics in healthcare systems, IVD enables patients and healthcare providers to detect diseases early. This allows treatment to be administered more quickly and effectively.
For example, IVD tests help identify tuberculosis rapidly and accurately, and the results are used to make treatment decisions.
These diagnostic solutions also help slow down or prevent the progression of diseases. Liver disease, which is particularly prevalent in the Asia-Pacific (APAC) region, is often referred to as a “silent killer” because it is frequently diagnosed after significant damage has occurred.
By detecting the disease earlier, complications such as liver cancer can be better managed and even prevented, increasing survival chances. Mortality rates of Hepatocellular Carcinoma (HCC) have been found to decrease by 37% due to earlier and more advanced diagnostics.
Prevent the Spread of Diseases
IVD tests serve as the first line of defense against the spread of diseases.
For example, COVID-19 test kits were used to identify infected individuals, who were then advised to isolate themselves to prevent further transmission.
IVD devices are also important in preventing the re-emergence of previously eradicated diseases such as smallpox.
Improve Patient Care and Management
IVD technologies help patients better understand their condition and make more informed medical decisions. This enables them to take greater control of their health and well-being, reducing hospital stays and emergency room visits.
For healthcare professionals, IVD supports faster, more personalized, and better-informed decisions regarding patient treatment plans.
In Vitro Diagnostic Regulations
Globally, IVD devices developed for the commercial market are regulated by national authorities to ensure they are safe and effective for use.
In most countries, devices are classified according to their potential risk to patients if the diagnosis is incorrect and the level of regulatory control required.
Based on their classification, devices must undergo different premarket processes before they can be introduced to the market.
United States
The Food and Drug Administration (FDA) is the regulatory authority overseeing medical and IVD devices.
Products are classified into three main categories:
- Class I products (e.g., cholesterol test) – Low to moderate risk; require general controls
- Class II products (e.g., pregnancy tests) – Moderate to high risk; require general and special controls
- Class III products (e.g., genetic tests used to select cancer treatments) – High risk; require general controls and Premarket Approval (PMA)
Premarket Requirements
There are two main premarket review pathways for products:
Premarket Notification
This is the less stringent pathway and is intended for Class I and some Class II devices that are substantially equivalent to existing products.
Premarket Approval
PMA is a more rigorous process requiring manufacturers to demonstrate the safety and effectiveness of the product.
This pathway is intended for most Class III devices and for innovative devices that are not substantially equivalent to any existing product.
Singapore
In Singapore, IVD products are regulated by the Health Sciences Authority (HSA) and are subject to the country's medical device regulations.
There are four risk classification categories:
- Class A products – Low risk (e.g., specimen containers)
- Class B products – Low to moderate risk (e.g., urine test strips)
- Class C products – Moderate to high risk (e.g., blood glucose self-testing systems)
- Class D products – High risk (e.g., HIV diagnostic kits)
Premarket Requirements
Depending on the classification, manufacturers may need to register and obtain approval for their products.
Class A products generally do not require registration but may need to be declared under the exemption list.
Class B, C, and D products require registration unless specifically exempted by HSA.
APAC Region
In the Asia-Pacific region, healthcare professionals face challenges such as an aging population and unequal access to medical care.
These issues increase the risk of diseases and complications while placing pressure on healthcare institutions.
Although IVD products can help address these challenges, differences in national regulations and limited prioritization of diagnostic solutions can restrict access to these technologies.
APACMed is working to promote greater regulatory harmonization across the region to improve access to IVD products.
Efforts are underway in countries including Singapore, Thailand, and the Philippines.
According to APACMed, collaboration between Singapore and Thailand aims to establish regulatory reliance pathways that simplify the registration and approval process for Class B, C, and D medical and IVD devices.
FAQs About In Vitro Diagnostics
Are In Vitro Diagnostics Considered Medical Devices?
Yes, although IVD products are non-invasive, they are considered medical devices.
Medical devices include any instrument, apparatus, software, or equipment used by patients and healthcare professionals to manage health.
As medical devices, IVD products are subject to regulatory requirements in each country or region.
What Is the Difference Between In Vivo and In Vitro Diagnostics?
In vitro diagnostics refers to non-invasive tests performed on human samples in a controlled environment.
In vivo diagnostics refers to tests performed in or on living organisms such as animals, plants, and humans.
In Vitro Diagnostics
IVD
What is IVD
In Vitro Diagnostic Devices
Laboratory-Based Tests
Point-of-Care Tests
Medical Diagnostics
Diagnostic Technology
Clinical Laboratory Testing
Disease Detection
Early Diagnosis
Precision Medicine
Blood Tests
Pregnancy Tests
COVID-19 Testing
Urinalysis
FDA IVD Regulations
Health Sciences Authority Singapore
APACMed
Medical Device Regulations
Diagnostic Devices
Patient Care
Healthcare Innovation
Genetic Testing
Immunoassays
Next-Generation Sequencing
According to research on Vitro Diagnostics Complete Guide to IVD Testing in Healthcare
