Lab Testing

The OSIA & COST seed lab will be ceasing operations on June 1, 2022. The final day OSIA will receive and enter samples for testing is May 16, 2022. Any samples received after May 16 will be returned to the sender. More information and a list of alternative seed labs is available here: Lab Closure. We appreciate your seed testing business over the years and regret the inconvenience this will cause. Our Field Inspection and Tagging Services will continue as normal.

OSIA Seed Lab

The OSIA Seed Lab regularly tests for our members over 400 different species of seeds, ranging from: corn, soybeans, and cereal grains to small seeds, vegetables, flowers, cover crops, turf and native grasses.

Submitting Samples to OSIA

OSIA Sample Submission Instructions
OSIA Sample Packing List (Please include with your sample)
Send Samples to: OSIA, PO Box 477, Dublin, OH 43017-0477

Central Ohio Seed Testing

Central Ohio Seed Testing (COST) provides seed laboratory testing for farmers and other non-members of Ohio Seed Improvement Assn. 

Submitting Samples to COST

COST Sample Submission Instructions
COST Sample Packing List (Please include with your sample)
Send Samples to: COST, PO Box 1580, Dublin, OH 43017-6580

Sampling and Sample Size

Please call for testing fees, actual sample weights and special requests. Sample packets are available free of charge upon request. Accurate test results reflect representative samples submitted. Please sample seed lots carefully and accurately before sending them to the seed lab for testing.


We are proud of our facilities and team of professionals that daily perform a multitude of seed testing activities

With our high expertise level and facility capabilities, we are prepared to handle your testing needs. Equipped with eight cabinet seed germinators and two walk-in germinators, we perform industry established tests to measure your seeds’ potential. Customers can be assured that they will receive reliable results that are indicative of the true quality and planting potential of their seed lots. 

List of Tests Offered

Varietal Purity
Mechanical Purity
Eye Appeal – Soybean
Seed Count
Bushel Weight
Hard Seed
Cold Test
Saturated Cold Test
Extended Cold Test
Accelerated Aging
Tetrazolium Test
Warm Sand
Early Growth Rate
Hypocotyl Grow Out
Hypochlorite Test
Peroxidase Test
Dimensional Width Sizing % (Soybeans only)
Cover Crop Test Special (Germination, Purity, Nox Weed)
No-Till Soybean Special (Germ., Cold Test, Seed Count)
Soybean Sprouting Test
Potential Emergence Predictor (PEP)
Coleoptile Grow Out
Fast Green
Vigor Test
Noxious Weed Exam
Undesirable Grass Seed Exam (UGS)
Fluorescence Test
Vegetable Seed Purity
Vomitoxin (ppm)
Herbicide Tests (RR, STS):
Soak Test (200 seeds)
Soak Test (1000 seeds)
Roundup Ready® Lateral Flow Strip – Bulk
Roundup Ready® Lateral Flow Strip – Seed/Leaf
Envirologix Trait QuickScan Quantitative Test
Envirologix Vomitoxin (DON) Quantitative Test
Plate Tests and Lateral Flow Strip Tests (LibertyLink, Cry1Ab, Cry3Bb, etc.)

Note: this may not be a complete list. Please contact us for test pricing or if there’s a test you need not listed.