Case Study: National O.E.M. Company achieves 90% lead-to-deal conversion and reduces sales staff with Callbox

Callbox Passes Diagnostic Test with Flying Colors

National O.E.M. Company, a California-based distributor of in-vitro diagnostic products that sells roughly 2 million drug tests annually, needed to grow market share against a low‑cost competitor by emphasizing product quality and bulk discounts. Facing gaps in its sales and marketing approach, the company engaged Callbox for a contact solution and lead generation service to better reach high‑volume buyers nationwide.

Callbox implemented an outbound lead generation campaign targeting businesses that conduct 50+ on‑site drug tests per day, offering free kit samples and qualifying prospects on test types and volumes. Callbox agents made 80–100 calls daily with a quota of four successful calls per agent (about 20 leads/week, 80/month); the campaign produced a 90% lead-to-deal conversion, reduced the client’s inside sales team from four reps to two, and generated ongoing satisfaction that has kept National O.E.M. Company working with Callbox since 2005.