Analytical Tox Lab Corp in San Antonio, TX is a full drug and alcohol testing Laboratory. No job is too small or too big. Our clients range from employers (pre-employment screens) to Government agencies and private individuals. We also provide DNA testing (paternity issues) and Pain Medicine Testing (for individuals taking medicine for pain) We specialize in Drug and Alcohol Testing through urine and hair. We pride ourselves in providing the fastest lab results (within 2 hours in most case) at the most affordable fees. We accept the following forms of payment: All Major Cards Accepted, VISA, American Express, MasterCard.