Overview of GMO testing methods
In food testing today, the two most common methods for detecting GMO are:
- GMO rapid test (lateral flow)
- PCR (Polymerase Chain Reaction)
👉 Each method has its own advantages and is suitable for different purposes.
1. What is a GMO rapid test?
A GMO rapid test is a method that uses antibodies to detect genetically modified protein in the food sample.
✅ Advantages:
- Fast time (5–15 minutes)
- Easy to use, no laboratory needed
- Suitable for on-site testing
❌ Disadvantages:
- Accuracy is not as high as PCR
- Cannot detect deeply processed samples
- Only serves as an initial screening
2. What is GMO PCR?
PCR is a method of detecting genetically modified DNA, helping to accurately determine the presence of GMO in the sample.
✅ Advantages:
- Very high sensitivity and accuracy
- Detects even processed samples
- Accepted in exports (EU, ISO, AOAC)
❌ Disadvantages:
- Requires laboratory equipment
- Takes longer than a rapid test
- Higher cost
3. Comparing GMO PCR vs GMO rapid test
👉 Quick conclusion:
- Rapid test → initial screening
- PCR → confirmatory testing
4. When is GMO PCR needed?
PCR is a mandatory choice when:
- Exporting to the EU, Japan, Korea
- Official results with legal validity are needed
- The sample has been processed (soybeans, corn, livestock feed)
- The sample is suspected to contain GMO
👉 PCR helps avoid the risk of having goods returned or violating regulations.
5. Optimal solution: Combine both the rapid test and PCR
Instead of choosing 1 of the 2, smart businesses will:
- Step 1: Use the rapid test to screen
- Step 2: Use PCR to confirm
✔ Reduce costs
✔ Increase control efficiency
✔ Ensure compliance with regulations
6. GMO testing solutions from R-Biopharm
R-Biopharm products provide a complete range:
- Convenient GMO rapid tests
- High accuracy GMO PCR kits
- A comprehensive solution for the QC laboratory
👉 Help businesses:
- Control raw materials effectively
- Meet export standards
- Improve brand credibility
⚠️ Common mistakes of businesses
- Using only the rapid test without confirmation by PCR
- Not testing GMO before exporting
- Using an unsuitable method
👉 Consequences:
- Goods are returned
- Loss of credibility
- Large cost damage
🎯 Conclusion
No method is “absolutely the best” — there is only the method most suitable for the objective.
Businesses should:
- Use the rapid test to save costs
- Use PCR to ensure accuracy
👉 Combining both is the most optimal solution in GMO testing today.