The panel answers a known question. These are for the questions it cannot: an organism that is not on the list, a room rather than a plant, a program rather than a sample.
Microbial identification by sequencing
For the unknown: an isolate on a plate, a contaminant in a culture, the mold on finished product that the certificate of analysis names only as a category. Bacterial and fungal. Send tissue, a swab, an isolate, or the sample itself; you get back the organism to genus and species where the reference data supports it, and how confident the call is.
Environmental testing
Water at the source, in reservoirs, in lines, and in runoff. Substrate and media. Surfaces and sanitation systems by swab. Air, sampled onto plates on site. Counts and identification, so you know where contamination enters rather than only that it did.
Screening programs
A standing order rather than a one-off test. Incoming genetics screened before they enter the facility. Mother stock checked on a cadence you set, with the labels and submission forms arriving before each collection date and the history of every line kept in one record.
Tissue culture indexing
For cultivators and labs running their own tissue culture: lines tested at each subculture, not only at intake, so contamination that was below the limit on day one is caught before it spreads through a bank. The same practice the lab uses on its own program.
Custom assay development
A target that is not on the panel: a pathogen specific to your facility, your crop, or your region. The lab designs the assay, validates it on your material, and runs it alongside the panel from then on.
Culture and microscopy
For what qPCR does not answer. Plating to see what grows and how much. Microscopy to look at the tissue, the roots, and the organism itself. Often the first step before sequencing, and often the step that tells you whether sequencing is needed.
Compliance failure response
Finished product over the limit on total yeast and mold or on a named organism. We review the certificates of analysis for the pattern, then test the rooms, water, and post-harvest areas to find where it enters. Usually run as a root cause investigation.
Everything beyond the panel starts with a conversation, because the right samples depend on the question. Email the lab and say what you are seeing.