Spectrum Polygraph Services provides accurate, confidential, and bilingual lie detector testing throughout Southern California. We specialize in polygraph exams for infidelity, immigration cases, and pre-employment screening. Whether you're seeking the truth in a relationship, supporting an immigration application, or hiring for a sensitive position, our certified examiners deliver reliable results using advanced computerized equipment. With law enforcement experience and a commitment to professionalism, we ensure every client is treated with respect and discretion. We proudly serve Los Angeles, Orange, Riverside, and San Bernardino Counties, offering flexible scheduling, including evenings and weekends. In-office and mobile testing options are available. Free phone consultations.