Testing Laboratories locations near Saint Clair, MO

Showing 1–4 of 4 results

Saint Clair, MO has 4 testing laboratories listings across 3 ZIP codes. Details on this page were last refreshed Sep 2026.

Gateway Drug Screening, LLC

Drug Screening Services

📍 206 S Church St, Union, MO, 63084

📞 636-583-2055

🌐 www.gatewaydsi.com

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Romer Labs

Testing Laboratories

📍 1301 Stylemaster Dr, Union, MO, 63084

📞 636-583-8600

🌐 romerlabs.com

MID America Testing Laboratory Inc

Laboratories

📍 10525 Signal Hl, Catawissa, MO, 63015

📞 636-257-4722

🌐 midamlab.com

Updated Sep 2026

Servonics Instrmentation

Laboratories Testing Calibration & Gauge Testing

📍 7 Industrial Dr, Pacific, MO, 63069

📞 636-271-4800

🌐 servonics.com

Related Categories
Drug Screening Services Laboratories Laboratories Testing Calibration & Gauge Testing Testing Laboratories