Soil labs by state
Oklahoma
In Oklahoma, homeowner soil testing is handled through Oklahoma State University’s Soil, Water & Forage Analytical Laboratory (SWFAL) and the OSU Extension network. OSU says every county Extension office is set up to take samples for analysis, and the university also publishes current sampling instructions and lab prices online.
Checked against official sources on October 4, 2026. Rules and links change; confirm with the office listed before you act.
- State soil lab
- Oklahoma State University Soil, Water & Forage Analytical Laboratory (SWFAL)
- Lab website
- Official page →
- Basic test price
- $15.00 per sample
- Find your county Extension office
- Official page →
Official resources in Oklahoma
Official OSU instructions for collecting samples and submitting them through county Extension offices.
Official current SWFAL price list, including the routine soil analysis price.
Main Oklahoma State University soil testing program page for homeowners, producers, and sample guidance.
Official county office finder for locating the OSU Extension office serving your Oklahoma county.
Official lab location page for the Stillwater laboratory.
Key facts for Oklahoma
- OSU says each Oklahoma county Extension office is set up to take samples for analysis and forward them to SWFAL. (OSU Soil Sampling & Tools)
- OSU’s current Routine Analysis price is $15.00 per soil sample. (OSU Laboratory Services and Price List)
- OSU says payment is expected when samples are dropped off at the county Extension office. (OSU Soil Sampling & Tools)
- OSU says routine samples are normally analyzed and reported within 2 to 5 working days after receipt. (OSU Testing & Lab Information)
- An OSU Extension article says soil samples may be submitted through the county office or sent directly to the SWFAL. (OSU article: Conduct soil test now ahead of spring planting)
- OSU Extension has offices in all 77 Oklahoma counties. (OSU County Extension Office Map)
What to do next
- Use the OSU county office map to find your county Extension office before sampling.
- Follow OSU’s sampling instructions, then take the sample to your county Extension office for forwarding to the lab.
- If you prefer not to use the county office, check the SWFAL location page and OSU’s article noting direct lab submission.
Helpful guides
- How to take a soil sample for a lab test
- University soil labs vs. private labs vs. home kits
- How to read a soil test report
- Soil pH and lime: what your test is telling you