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Botanical and herbal natural health products can present analytical challenges because plant-derived materials may vary with growing conditions, harvest, drying, processing, storage, supplier and lot.
Depending on the material and finished-product specification, relevant testing may include:
PBR Laboratories supports botanical and herbal product manufacturers, ingredient suppliers, importers, brand owners and quality teams from Edmonton across Alberta, Western Canada and Canada.
The testing program should begin with a practical question:
What risks are relevant to this botanical ingredient or finished product, and what quality decision must the results support?
Testing requirements depend on the actual matrix rather than simply the term “botanical.”
Applicable products may include:
Different matrices can require different sample preparation, microbiological approaches and contaminant considerations.
PBR’s service catalogue documents a group of microbiological, mycotoxin, moisture/water-activity and contaminant services for applicable plant/oil/edible matrices.
Plant materials can be influenced by multiple stages before they reach manufacturing:
Growing conditions → Harvesting → Drying → Transportation → Storage → Grinding or processing → Supplier handling → Manufacturing
Potential quality concerns can therefore arise from:
The appropriate laboratory testing should be based on the actual botanical, source, specification and decision rather than a universal panel applied to every herbal product.
Botanical ingredients can carry microorganisms from agricultural and processing environments.
Depending on the product and specification, microbiological testing may include:
PBR’s current catalogue documents these microbiological targets for applicable plant/oil/edible matrices.
PBR’s established Natural Health Product microbiology service also includes applicable testing using United States Pharmacopeia <61>, <62>, <2021> and <2022>, depending on the product, matrix and specification.
What can botanical microbiology results support?
Results may contribute to:
Related Service → Natural Health Product Microbiology Testing
The applicable United States Pharmacopeia approach depends on the product category and microbiological question.
Broadly:
Enumeration methods help evaluate microbial populations.
Specified-microorganism methods evaluate whether selected organisms are detected under the applicable method.
The correct choice should align with:
The method should not be selected simply because another botanical product uses it.
Related Resource → Which USP Microbiology Method Applies to My Natural Health Product?
Botanical materials can be particularly relevant to yeast-and-mould testing because they originate from agricultural environments and can be affected by drying and storage.
PBR’s current service catalogue specifically documents yeast and mould testing for plant/oil/edible matrices using applicable USP <2021>/<2022> methods.
What does an elevated yeast-and-mould result mean?
It means the submitted sample produced a result outside or above the comparison criterion being used.
It does not automatically identify the source.
An investigation may need to consider:
Botanical and plant-derived materials may require mycotoxin consideration because contamination can occur during growing, harvesting, drying or storage.
PBR’s documented capabilities include:
When should mycotoxin testing be considered?
Testing may support:
Mycotoxins may be unevenly distributed through a botanical lot.
That means a small grab sample may not adequately represent a large shipment.
PBR’s decision framework specifically warns that too few increments and inappropriate compositing can reduce confidence in a result, while composite sampling can dilute localized contamination.
A mycotoxin sampling plan should consider:
Related Resource → How to Sample Botanical Ingredients for Mycotoxin Testing
These tests answer different questions.
Evaluates viable fungal populations under the applicable microbiological method.
Measures specific toxic compounds produced by certain fungi.
A low yeast-and-mould result does not automatically prove that mycotoxins are absent.
Likewise, a mycotoxin result does not replace microbiological quality testing.
Related Resource → Mycotoxin Testing vs Yeast & Mould Testing
Botanical materials can be influenced by soil, water, agricultural conditions and ingredient source.
Where relevant to the product specification, elemental contaminant testing may include:
PBR’s current service catalogue identifies these four metals for applicable plant/oil/edible matrices using inductively coupled plasma mass spectrometry and identifies the service as subcontracted.
What can heavy metals testing support?
Testing may contribute to:
Not automatically.
The laboratory result provides the concentration measured in the submitted sample.
The quality team must then evaluate it against:
The laboratory number should not be interpreted without its acceptance criterion.
PBR’s current service catalogue also documents pesticide residual testing by United States Pharmacopeia <561> for applicable plant/oil/edible matrices, identified as a subcontracted service.
Because this capability is not currently a standalone page in the locked Natural Health Product architecture, it should sit under Heavy Metals & Contaminant Testing rather than creating another service URL immediately.
Where pesticide-residue testing is needed, confirm:
with PBR before submission.
Moisture can affect:
PBR’s catalogue documents moisture testing for applicable plant/oil/edible matrices.
An unexpected moisture result may warrant review of:
Water activity provides information about how available water is within the matrix.
It is not the same as moisture content.
Two botanical powders can contain similar amounts of total moisture but have different water activities depending on how water interacts with the matrix.
PBR’s current catalogue documents water activity testing for applicable plant/oil/edible matrices.
This distinction should be a strong AEO section.
How much water is present?
How available is that water?
They answer related but different quality questions.
Related Resource → Water Activity vs Moisture in Natural Health Products
Some botanical or herbal formulations may require selected nutritional or compositional analysis.
PBR’s documented nutritional capabilities include parameters such as:
The correct analytical approach depends on what the client needs to verify.
Raw-material testing can help move quality decisions earlier in the production process.
Testing may support:
A useful workflow is:
Finished-product testing answers a different question.
Instead of:
Does this ingredient meet our incoming specification?
the question becomes:
Does the manufactured botanical product meet the selected finished-product criteria?
Relevant testing may include:
No.
A raw-material result applies to the submitted ingredient sample and parameters tested.
Finished-product quality can also be affected by:
Ingredient and finished-product testing therefore support different quality decisions.
Related Resource → Raw Material Testing vs Finished Product Testing
Botanical suppliers may provide a Certificate of Analysis for an ingredient lot.
Independent analytical testing can help answer:
Does the submitted material produce results consistent with the parameters we need to verify?
Verification can be relevant when:
The test should be selected according to the specific parameter being verified.
Related Resource → How to Verify a Supplier Certificate of Analysis
An unexpected result should be investigated rather than simply retested automatically.
Review:
Different failures require different investigations.
May direct attention toward raw materials, drying, storage, processing or handling.
May require review of lot sampling, supplier source and storage.
May require investigation of ingredient origin or source materials.
May require review of drying, packaging or storage conditions.
The next test should answer the next quality question.
Sampling is especially important for heterogeneous botanical materials.
Common mistakes include:
PBR’s decision framework emphasizes representative sampling and warns that compositing can dilute localized contamination.
Ask PBR about sample requirements before collecting from a large botanical lot.
PBR Laboratories provides botanical and herbal product testing support from Edmonton, Alberta.
Alberta manufacturers, suppliers and quality teams can discuss:
PBR supports botanical ingredient suppliers and natural health product companies throughout Western Canada with applicable analytical testing.
The program should be based on:
ingredient risk → product specification → representative sample → appropriate testing → quality decision
rather than applying the same panel to every botanical material.
PBR supports Canadian natural health product companies requiring applicable microbiological, mycotoxin, contaminant, composition and quality testing for botanical products.
The goal is not simply to provide analytical numbers.
PBR’s positioning is to help clients understand what the result means for the ingredient, lot, supplier or finished product and what testing decision may be appropriate next.
Depending on the botanical and specification, microbiology, mycotoxins, heavy metals, moisture, water activity, selected composition testing and other contaminant analyses may be relevant.
Yes. PBR’s current catalogue documents microbial testing for applicable plant/oil/edible matrices, including yeast and mould, total aerobic count and selected specified microorganisms.
PBR’s Natural Health Product microbiology service includes applicable United States Pharmacopeia <61>, <62>, <2021> and <2022> testing depending on product and specification. The service catalogue specifically documents USP <2021>/<2022> for applicable plant/oil/edible microbiology.
Yes. PBR’s documented capabilities include Aflatoxin B1, B2, G1, G2, total aflatoxins and Ochratoxin A for applicable matrices.
No. Microbial enumeration and mycotoxin analysis answer different questions.
PBR’s documented service includes lead, arsenic, cadmium and mercury for applicable plant/oil/edible matrices, with this service identified as subcontracted.
PBR’s service catalogue documents pesticide-residual testing using United States Pharmacopeia <561> for applicable plant/oil/edible matrices, identified as subcontracted. Current matrix and project requirements should be confirmed before submission.
Moisture measures how much water is present, while water activity describes how available the water is. They provide different quality information.
Potentially both, depending on the quality program. Ingredient testing supports supplier and incoming-lot decisions, while finished-product testing evaluates the manufactured formulation.
Botanical materials can be heterogeneous, and contaminants such as mycotoxins may be unevenly distributed. Representative sampling is therefore critical when results will support a lot-level decision.
Yes. PBR supports clients throughout Alberta, Western Canada and Canada.