Laboratory Testing

San Diego's laboratory testing category holds 128 listings. That number alone won't tell you who answers the phone. 121 entries list a phone number and 110 link to a website, so most give you a way to follow up beyond a name and address. Zip 92121 has 48 listings, the largest cluster in the city, with 92103 next at 7. Call two or three before sending a sample and confirm turnaround times and accepted tests yourself.