Cannabis & Hemp Pathogen Testing
Comprehensive virus and fungal screening with compliance documentation for commercial growers and nurseries
Why Test Cannabis & Hemp?
Cannabis and hemp crops are vulnerable to a range of viral pathogens that can silently reduce yield, potency, and quality. These viruses spread through vegetative propagation as well as insect vectors — aphids, thrips, and whiteflies among others — and often cause no visible symptoms until significant infection spread has already occurred.
For commercial growers and nurseries, regular virus testing is essential for:
- Maintaining clean mother stock
- Meeting regulatory and compliance requirements
- Preventing crop losses and quality degradation
- Protecting your reputation and customer relationships
Comprehensive 12-Virus Panel
Our Full Panel delivers the most complete protection against viral threats in cannabis crops
Impact: Reduced vigor and flower mass; 'dudding' symptoms in susceptible cultivars; can reduce cannabinoid content substantially
Transmission: Primarily via infected mother stock/cuttings and contaminated tools; can spread in shared water/propagation systems
Impact: Interveinal chlorosis, brittle leaves, reduced vigour
Transmission: Whiteflies (Bemisia tabaci)
Impact: Leaf curling, stunting, vein swelling, plant death in severe cases
Transmission: Beet leafhopper (Circulifer tenellus)
Impact: Leaf mottling, distortion, reduced vigor
Transmission: Mechanical transmission, contaminated tools
Impact: Mosaic patterns, leaf curl, reduced quality and vigor
Transmission: Mechanical transmission, can be seed-borne in some hosts
Impact: Often asymptomatic alone, may worsen co-infections
Transmission: Seed-borne, vertical transmission
Impact: Severe mosaic, leaf distortion, stunting
Transmission: Aphids, mechanical
Impact: Yellowing, mottling, reduced growth
Transmission: Aphids
Impact: Necrotic streaks, leaf distortion, stem necrosis
Transmission: Transmission is complex and often involves infected pollen + thrips activity
Impact: Ringspot patterns, root decline, stunting
Transmission: Nematodes (Xiphinema), seed
Impact: Ringspot, bud blight, stem necrosis, stunting
Transmission: Nematodes, thrips (in some hosts), seed
Impact: Mosaic, leaf deformation, reduced vigour
Transmission: Nematodes (Xiphinema)
3-Virus Reduced Panel
Targeted screening for the three most common cannabis viruses — a cost-effective option for routine monitoring
Hops Latent Viroid (HpLVd)
The #1 threat — causes dudding syndrome and yield loss
Lettuce Chlorosis Virus (LCV)
Whitefly-transmitted, causes interveinal yellowing
Beet Curly Top Virus (BCTV)
Leafhopper-transmitted, causes curling and stunting
Custom Panels Available: Need testing for additional pathogens or crop-specific viruses? We offer custom assay development for specialized needs.
3-Panel Fungal Screening
Identify the most common fungal pathogens in cannabis crops for early intervention and improved plant health
High impact
Pythium
Root rot pathogen that thrives in wet conditions, causing damping-off in seedlings and root decay in mature plants.
High impact
Fusarium
Causes wilt disease by blocking vascular tissue, leading to yellowing, wilting, and plant death.
High impact
Botrytis
Grey mould — attacks flowers and dense buds, especially in humid environments. Major post-harvest threat.
Important: Fungal tests require fungal-specific collection tubes (barcodes ending in "F"). These tubes contain different extraction chemistry and are not interchangeable with viral testing tubes.
Testing Process & Turnaround
1
Order & Collect
Order your testing kit online. Follow our sample collection guide (leaf tissue, 2-3g per plant).
2
Ship to Lab
Ship samples to our facility. We extract RNA/DNA and run qPCR analysis on our advanced platforms.
3
Results Delivered
Receive detailed reports in 5-8 working days with interpretation support and next-step recommendations.
Standard Turnaround
5-8 Working Days
For cannabis and hemp samples
Sample Submission Form
Download our collection guide with step-by-step instructions and submission table
Download PDFCannabis Brochure
View our full cannabis testing brochure with service details and pricing
Download PDF
Professional Quality Assurance
Our testing protocols meet the highest industry standards for cannabis and hemp production. We understand the critical importance of maintaining clean stock programs and preventing contamination in commercial facilities.
Ongoing Monitoring Programs
Regular testing schedules for mother stock and propagation areas
Certification Documentation
Complete test reports for licensing and compliance requirements
Expert Consultation
Post-diagnostic support and sanitation protocols included
First-Time Client Support
Complimentary video call to guide you through sample collection and the testing process
Compliance & Certification Support
Nexus Diagnostics provides testing documentation that meets regulatory requirements for:
- Virus-free certification (international and domestic)
- Nursery licensing and clean stock programs
- Quality assurance for commercial operations
- Industry standards alignment
Our reports include detailed pathogen detection results, methodology descriptions, and accreditation information suitable for regulatory submissions. Learn more about our compliance and certification services.
Ready to Protect Your Crops?
Order your testing kit today and get results you can trust