In Vitro Diagnostics

What Are In Vitro Diagnostics?

In vitro diagnostics, often called IVDs, are regulated products used to examine specimens taken from the human body, such as blood, urine, tissue, secretions or other biological samples.

They are used to support diagnosis, testing, measurement or evaluation of diseases, health conditions or specific biological markers. Typical examples include diagnostic reagents, test kits, measurement reagents and laboratory diagnostic products.

For import practice in Japan, a product sold overseas as a research reagent, laboratory kit, self-test kit or simple test product may still fall within Japanese regulation if it is intended to be used for diagnosis, testing or health-related evaluation in Japan.

Why This Matters in Import Practice

In vitro diagnostics are not ordinary laboratory goods when they are imported, sold or supplied for diagnostic purposes in Japan.

The regulatory position may change depending on the intended use, claims, labelling, sales channel, user group and whether the product is used for human specimens. A product name such as “test kit,” “diagnostic reagent” or “laboratory reagent” is not enough to decide the classification.

The Act on Securing Quality, Efficacy and Safety of Products Including Pharmaceuticals and Medical Devices, commonly called the PMD Act, covers in vitro diagnostics as regulated products in Japan.

Importers, overseas suppliers and origin-side forwarders should therefore confirm the Japanese regulatory status before shipment, especially when the product is intended for medical institutions, testing laboratories, pharmacies, clinics or general consumers.

Difference from Medical Devices

Medical devices generally include instruments, apparatus, software and other products used for diagnosis, treatment, prevention or effects on the structure or function of the human body.

In vitro diagnostics are mainly reagents, kits or products used to examine specimens outside the human body. They are different from medicines that are administered directly to a person.

However, some products are used together with testing instruments, analyzers, software or measurement systems. In such cases, both the medical device side and the in vitro diagnostic product side may need to be checked.

Typical Products

Products that may fall within the scope of in vitro diagnostics include items used to test or measure disease-related or body-condition-related information.

• Infectious disease test kits
• Pregnancy tests and ovulation tests
• Blood glucose, lipid or urine component test reagents
• Tumor marker, hormone or antibody test reagents
• Diagnostic reagents used by medical institutions or testing laboratories
• Simple test kits marketed to general consumers

The final classification depends not only on the physical product, but also on the intended use, claims, instructions, labelling and sales route in Japan.

Research Use Only and Diagnostic Use

Research use only products require particular care in Japan import practice.

A product may be described by the overseas supplier as a research reagent, laboratory reagent or RUO product. However, if it is actually marketed, supplied or used for diagnosis or health-related testing in Japan, the Japanese regulatory treatment may change.

Importers should not rely only on the phrase “research use only.” They should check the actual intended use, sales materials, website descriptions, package labels, instructions and expected users.

Risk Classification and Regulatory Route

In vitro diagnostics in Japan are classified by risk level. The classification affects whether the product is handled through self-certification, third-party certification or ministerial approval.

In general, lower-risk IVD products may be handled through self-certification or certification, while higher-risk or novel products may require ministerial approval reviewed by PMDA.

The applicable route depends on the test item, intended use, risk level, notified standards, novelty and whether the product conforms to the applicable approval or certification standards.

For this reason, importers should not decide the procedure only from the commercial product name. They should confirm the IVD classification and regulatory route before shipment or sale planning.

Import and Marketing Requirements

When in vitro diagnostics are imported and sold for business purposes in Japan, several PMD Act-related procedures may become relevant.

Depending on the product, these may include marketing authorization holder requirements, manufacturing-related registration, foreign manufacturer registration, and product-specific approval, certification or notification.

A Marketing Authorization Holder, often called an MAH, is the Japanese-side entity responsible for placing the regulated product on the Japanese market. For overseas manufacturers, the Japanese MAH or an appointed Japanese-side operator is usually central to the regulatory route, product responsibility and post-market control.

The necessary procedure depends on the test item, intended use, risk classification, user group, sales channel and whether domestic storage, labelling, packaging or other handling is performed in Japan.

Labelling and Advertising

For in vitro diagnostics, the indication of intended use, test item, target user, specimen type, result interpretation and testing method is important.

If the product label, package insert, website, e-commerce page, brochure, advertisement or social media post makes diagnostic or measurement claims beyond the authorized or notified scope, it may create a regulatory problem under the PMD Act.

Importers should check not only the product itself, but also the wording used in sales materials and online listings.

Main Points to Check

When a shipment includes products described as test kits, diagnostic reagents or laboratory reagents, forwarders and import coordinators should check the following points with the importer:

• Whether the product is used with human specimens
• Whether it is for research use only or diagnostic/testing use
• Whether it claims to detect, diagnose, measure or evaluate disease or health conditions
• Whether the product is intended for medical institutions, laboratories, pharmacies or consumers
• Whether the importer has confirmed PMD Act classification
• Whether the IVD risk classification and regulatory route have been confirmed
• Whether approval, certification, notification or self-certification is required
• Whether a Japanese MAH or other responsible Japanese-side operator is involved
• Whether Japanese labelling, instructions and advertising claims are controlled
• Whether there is documentary evidence if the importer concludes that the product is outside the regulated scope

Common Problems

• The invoice only says “test kit,” “reagent” or “laboratory item”
• The overseas supplier describes the product as research use only, but the Japanese sales page suggests diagnostic use
• The importer checks customs classification but not PMD Act classification
• The importer does not identify the IVD risk classification before sale planning
• The product is intended for general consumers without confirming whether consumer sale is allowed
• The test item, specimen type or intended use is unclear
• Advertising claims are stronger than the permitted regulatory scope
• The role of the Japanese MAH or responsible Japanese-side operator is unclear
• The importer does not retain evidence for an “outside scope” conclusion

Practical Notes for Shipments to Japan

For shipments to Japan, origin-side forwarders should be cautious when cargo descriptions include terms such as “diagnostic reagent,” “test kit,” “IVD,” “laboratory reagent,” “self-test,” “infection test,” “pregnancy test,” “blood glucose test” or similar wording.

These terms do not automatically mean that the shipment is prohibited, but they are warning signs that the Japanese importer should confirm the regulatory position before shipment.

In Japanese practice, the formal import movement and the domestic sale or diagnostic use of the product should be separated clearly. A product may be physically importable, but still problematic for sale, advertising or diagnostic use without the necessary regulatory status.

Relationship with Logistics and Customs

Forwarders and customs brokers are not expected to decide the PMD Act classification by themselves.

However, they should notice when a product description suggests possible in vitro diagnostic use and ask the importer to confirm whether the necessary regulatory checks have been completed.

If the product includes biological materials, temperature control requirements, dangerous goods components, dry ice, infectious substances or special handling conditions, separate logistics checks may also be necessary.

Key Takeaway

In vitro diagnostics are regulated products used to examine human specimens outside the body for diagnosis, testing or measurement.

In Japan, the key issue is not only the product name, but also the intended use, claims, specimen type, user group, sales route, IVD risk classification and PMD Act procedure.

For forwarders and overseas suppliers, the safest approach is to identify possible IVD products early and ask the Japanese importer to confirm the regulatory status before shipment arrangement.