**2025 NAPT-PAP Accredited Lab for Soil Testing (Performance Assessment Program)
New pricing effective as of February 28, 2025. Please read the Fees Per Analysis PDF below or contact the lab (Soil.Lab@oregonstate.edu) if you have questions about fees.
- How to Collect and Submit a SOIL Sample
- Soil Submission Form (PDF)
- Volume Requirements (PDF)
- Fees Per Analysis (PDF)
- Interpreting Results
- Video on OSU Soil Testing & Interpretation (Lane County Master Gardeners)
- Varies by submission size and analyses selected.
- Basic and advanced nutrient analyses of garden and grower-scale submission size are generally completed in 4 - 5 weeks once samples are received in the lab.
- If you plan to submit a large submission, please contact the lab for more up-to-date turnaround estimates. We can do our best to work with your priority of analyses and send out data on a rolling basis.
Mail samples AND Soil Submission Form to:
OSU Soil Health Lab
3017 Ag Life Sciences Bldg
Corvallis, OR 97331
- Samples AND Soil Submission Form can be placed in the Submission Drop Box outside of our laboratory door, Agricultural Life Sciences Bldg Room 3079.
- Plastic bags, sharpies, and extra submission forms are available if needed.
- Drop-off hours are Monday-Friday 9AM - 3PM.
- Contact the lab AFTER drop-off to alert lab personnel to check the Submission Drop Box.
- Ring the doorbell if you need assistance.
- View the All Fees Per Analysis for a full view of all analyses offered or scroll down to see soil-specific analyses.
- Pricing is per sample AND varies by submission size.
- A discount is given for submissions of 16+ samples.
- Turnaround time for RUSH analysis varies by sample submission size. Contact the lab if you'd like to do a RUSH analysis.
- Contact the Lab Manager if you'd like to receive a formal quote.
You MUST contact the lab BEFORE shipping out-of-state samples. We need to confirm whether the samples are coming from an area that is federally regulated by the USDA APHIS program and may pose a biological threat to the soils and plants of our region.
Soil Packages
*Sample Preparation (grinding, sieving, drying) is an additional $ 7.00/sample for all sample submissions.
| Package | Contents | RUSH Analysis |
Price per sample for 1-15 samples |
Price per sample for 16+ samples |
| Western/Eastern OR Basic Nutrient | pH, lime req, ammonium-N, nitrate-N, P, K, Mg, Ca, total C and N, organic matter estimate | $ 200.00 | $ 66.00 | $ 57.00 |
| Western/Eastern OR Advanced Nutrient | Basic + Mn, Cu, Zn, Fe, B | $ 225.00 | $ 81.00 | $ 69.00 |
| Complete Assessment of Soil Health | pH, EC, organic matter estimate, total C and N, nitrate-N, P, K, Mg, Ca, texture, potentially mineralizable nitrogen, active carbon, wet aggregate stability, microbial respiration | $ 150.00 | $ 146.00 | |
| Basic Soil Health Assessment | pH, texture, total C and N, organic matter estimate, wet aggregate stability, respiration | $ 92.00 | $ 88.50 | |
| Soil Microbial Assessment | microbial biomass, microbial respiration, active carbon, B-glucosidase activity | $ 97.00 | $ 85.00 | |
| Soil Physical Assessment | Texture, wet aggregate stability, moisture | $ 71.50 | $ 66.50 | |
| Heavy-Metal Analysis | Total As, Cd, Cr, Cu, Ni, Pb, Zn | $ 140.00 | $ 41.00 | $ 34.00 |
Individual Soil Analyses
*Sample Preparation (grinding, sieving, drying) is an additional $7.00/sample for all sample submissions.
Chemical Properties
| Analysis | Description | RUSH Pricing per sample | Price per sample for 1-15 samples | Price per sample for 16+ samples |
| pH | acidity or alkalinity of soil | $ 21.00 | $ 9.00 | $ 8.00 |
| Lime requirement-Sikora buffer | Buffer pH | $ 20.00 | $ 9.00 | $ 8.00 |
| Electrical conductivity (EC) | conductivity of soil salts in solution | $ 15.00 | $ 10.00 | $ 9.00 |
| pH+EC | $ 23.00 | $ 12.00 | $ 11.00 | |
| Extraction-simple soil | Varies by nutrient and often needs an additional analysis (colorimetric or ICP) | $ 25.00 | $ 11.00 | $ 10.00 |
| Plant available Phosphorus (PO4-P) | Colorimetric analysis for Bray+Olsen extractions | $ 45.00 | $ 18.00 | $ 15.50 |
| Plant available Ammonium (NH4-N) | Colorimetric analysis for KCl extractions | $ 35.00 | $ 12.00 | $ 11.00 |
| Plant available Nitrate (NO3-N) | Colorimetric analysis for KCl extractions | $ 33.00 | $ 11.00 | $ 10.00 |
| NH4-N + NO3-N | $ 64.00 | $ 19.00 | $ 16.50 | |
| Elemental analysis by ICP-OES | Determination of elemental concentrations | $125.00 | $ 26.00 | $ 21.00 |
| Total Carbon and Nitrogen | Total CN and organic matter estimate by Elementar | $ 50.00 | $ 24.00 | $ 22.50 |
| Potential Cation exchange capacity | Exchangeable acid + base cations | $ 68.00 | $ 65.00 | |
| Effective Cation Exchange Capacity | Exchangeable base cations | $100.00 | $ 31.00 | $ 28.50 |
| Microwave digestion | Nitric acid digestion for total elements | $ 35.00 | $ 20.00 | $ 19.00 |
BIOLOGICAL PROPERTIES
| Analysis | Description | RUSH Pricing per sample | Price per sample for 1-15 samples | Price per sample for 16+samples |
| Organic matter | Loss-on-ignition | $ 25.00 | $ 11.50 | $ 11.00 |
| Active Carbon | Involved in nutrient cycling and defense | $ 30.00 | $ 18.00 | $ 17.00 |
| Microbial biomass | Bulk biomass of soil microbial community | $ 42.00 | $ 36.00 | |
| Microbial respiration | CO2 release over 96-hour incubation | $ 18.00 | $ 18.00 | |
| Potentially mineralizable nitrogen (7-day) | N mineralization after 7-day incubation | $ 45.00 | $ 21.00 | $ 20.00 |
| Potentially mineralizable nitrogen (28-day) | N mineralization after 28-day incubation | $ 45.00 | $ 19.00 | $ 17.50 |
| B-glucosidase enzyme | Microbial activity indicator | $ 29.00 | $ 23.00 | |
| ACE Protein | Microbial activity indicator | $ 30.00 | $ 17.00 | $ 15.00 |
PHYSICAL PROPERTIES
| Analysis | Description | RUSH Pricing per sample | Price per sample for 1-15 samples | Price per sample for 16+samples |
| Bulk Density | Requires submission of sample with known volume | $ 20.00 | $ 8.00 | $ 6.00 |
| Texture by Hydrometer | % sand, silt, clay | $ 50.00 | $ 20.00 | $ 17.00 |
| Texture by Sieve & Pipette | More sand + silt fractions that hydrometer method | $125.00 | $ 55.00 | $ 53.00 |
| Water Stable Aggregates | Aggregate stability after rain simulation | $ 55.00 | $ 38.00 | $ 36.50 |
| Moisture Release Curves | Soil moisture release measured by HYPROP | $ 144.00 | $ 139.00 |