Coupon Codes not valid for this testing. Fasting Required: No Lab: Quest Diagnostics Specimen: Serum Results: Average processing time 5-7 days Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance. Description: Rickettsia (RMSF) Antibodies (IgG, IgM) with Reflex to Titers - Antigen specific IgG and IgM titers allow rapid diagnosis of infection by any of the spotted fever group of rickettsial agents. This group of agents include R. rickettsii (Rocky Mountain Spotted Fever) and R. akari (rickettsial pox), both seen in the continental United States. Alternative Name(s): Rocky Mountain Spotted Fever, Spotted Fever Typhus