Sample Submission

Sample Preparation Guidelines

Collect healthy, representative tissue unless you are submitting for a specific issue. Then submit good vs bad tissue.
Avoid leaves or tissue with soil, dust, spray residue, or fertilizer granules when possible.
Place tissue in a clean paper bag or breathable container. Avoid sealing fresh tissue in plastic for extended periods.
If shipping will be delayed, keep samples cool and ship as soon as possible.

Collect a representative composite from multiple locations within the container/bench/area.
Avoid sampling only the surface. Include material from the root zone.
Remove large debris and avoid including roots or plant material unless requested.
Place media in a clean sealed bag to prevent leakage and moisture loss.

Collect a composite sample by mixing subsamples from several locations within the area.
Remove surface debris (mulch, leaves) and avoid sampling immediately after fertilizer application unless that is the purpose of the test.
Place soil in a clean sealed bag and clearly label the sample ID to match your submission form.

Use a clean bottle with a tight-fitting cap. Rinse the bottle with the sample water or solution before final filling if possible.
Fill to minimize air space and ensure the cap is secure to prevent leaks.
Label bottle(s) clearly and package in a secondary bag to protect paperwork.
If temperature-sensitive, ship promptly and keep samples cool.

Submit fresh, representative material showing early to moderate symptoms when possible. Avoid material that is completely decayed.
Include multiple pieces if available, and submit the transition area between healthy and affected tissue.
If submitting roots, include some surrounding media/soil if relevant, and keep roots from drying out.
Place plant material in a sealed plastic bag to retain moisture. Do not allow soil or media to contaminate upper portion of plant.
Keep samples cool (do not freeze unless instructed) and ship as soon as possible.
Include background information on the Pathology Submittal Form, such as crop/variety, symptoms, timeline, and any recent treatments.

Use clean containers and tools to avoid cross-contamination between samples.
Separate each sample in its own bag or bottle, even if they are related.
Protect paperwork by placing forms in a sealed plastic bag inside the box.
For liquids, double-bag bottles and use absorbent material in case of leaks.
Ship early in the week when possible to reduce weekend delays in transit.
Keep samples cool and out of direct heat during storage and shipping.
Clearly indicate any priority timing or special handling notes on the submission form.
If you are unsure which test to request, contact QAL before shipping for guidance.