Step 1
Start Your Inquiry
Select the testing service that matches your crop and needs. Choose from cannabis, pome fruit, stone fruit, grapevine, custom assays, or contact us for specialized testing.
How It Works
Getting started with plant virus testing is simple. From sample collection to actionable results, we guide you every step of the way.
Step 2
Collect Samples
Follow our detailed sample collection guide (included with your kit). Collect fresh leaf tissue or dormant cane samples according to the instructions. Proper sampling is key to accurate results.
Sample Size: 2-3 grams of fresh tissue per plant
Storage: Keep cool, ship within 24-48 hours
Labeling: Clearly label each sample with unique identifiers
Step 3
Ship to Our Lab
Package your samples securely and ship them to our facility using the prepaid shipping label (where applicable). We'll send you a confirmation email when your samples arrive.
Shipping Address:
Nexus Diagnostics, Unit D, Fabriek Nationale Building, 9 Fabriek St, Franschhoek, 7690, South Africa
Ship via The Courier Guy (overnight) at room temperature
Email submission forms to: submissions@nexus-diagnostics.com
Step 4
We Test Your Samples
Our lab team extracts RNA/DNA from your samples and runs comprehensive qPCR analysis using advanced automation platforms. We test for all pathogens in your selected panel.
Technology: Quantitative PCR (qPCR) with proprietary assays
Turnaround: 5-8 working days (cannabis/hemp), up to 10 working days (other crops)
Quality Control: Every run includes positive/negative controls
Step 5
Receive Results & Take Action
Get detailed reports via email with clear pathogen detection results, interpretation guidance, and next-step recommendations. Our team is available for post-diagnostic support and consultation.
Report Format: PDF with full methodology and accreditation info
Support: Email or phone consultation included
Certification: Export documentation available upon request
Personal Support at Every Stage
New to Nexus?
Book a complimentary video call before you start. We'll walk you through sample collection, introduce our team, and answer any questions about the testing process.
Results Walkthrough
Once your results are ready, we offer a follow-up video call to explain your report in context and discuss recommended next steps for your operation.
Common Questions
How much does testing cost?
Pricing varies by crop and panel size. Request a quote or contact us for current pricing.
How many samples should I submit?
We recommend testing at least 20% of your crop, though this varies by crop type. Contact us for guidance specific to your situation.
How long does testing take?
Cannabis and hemp testing takes up to 8 working days. All other crops, including grapevine, take up to 10 working days. Contact us if you have an urgent situation.
Do you provide interpretation support?
Yes! Every report includes interpretation guidance, and our team is available for post-diagnostic consultation via email, phone, or a virtual call.
Can I get virus-free certification?
We provide the test report as certification, and if needed we can provide additional certified documents as the need arises.
Ready to Protect Your Crops?
Order your testing kit today and get results you can trust