Polygraph and Lie Detector in Valencia
ACCURACY ≈ 98%
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Polygraph in Valencia: Professional Lie Detector.
“Interpolys” is a leading lie detection center providing professional polygraph services to businesses and individuals in Valencia and throughout Spain. In a world where trust is hard to come by, we find the truth where words raise doubts.
Our polygraph experts, with international experience, guarantee high testing accuracy (up to 98%) and 100% confidentiality for every client on the Costa Blanca. We help protect your capital, business reputation, and personal relationships by providing objective facts even in the most complex situations.
Individuals
Test for infidelity
from 350 €
Checking domestic staff
from 350 €
Investigation into thefts
from 500 €
View all services
Organisations
Pre-employment screening
from 350 €
Routine check of current staff
from 350 €
Protecting honour and dignity
from 400 €
View all services
Polygraph Experts in Valencia
A team of in-house specialists. We do not resell services; instead, we provide them directly, taking full professional responsibility for every result in Valencia.
ANDREW DIAK
Polygraph examiner, 15 years’ experience
Higher education, practical psychology
Oleg Smolnitsky
Polygraph examiner, 5 years’ experience
Higher education, practical psychology
Arnold Eduardo Burgos
Polygraph examiner, 14 years’ experience
Higher education, practical psychology
OUR OFFICE
We look forward to seeing you at our office in downtown Valencia.
Quick Answers
Here are the 12 most frequently asked questions (FAQ)
About 90–120 minutes.
No, it is completely painless.
Comfortable clothing.
Yes, in moderate amounts.
They can wait outside.
Yes, provided standards are met.
Verbally — sometimes; report within 24h.
Completely. For the client only.
Yes, but the deposit is non-refundable.
Yes, for couples or groups.
Yes, lies [physiological responses] differ.
Yes, if the result is unclear.
What happens during a lie detector test?
The stages of a standard polygraph test procedure
INITIAL ASSESSMENT AND CONSULTATION
APPROVAL OF THE MINUTES
SELECTION OF QUESTIONS AND METHODS
EXPERT TESTING
PREPARATION OF THE FINAL REPORT
An official expert report is being prepared based on the results of the audit. The document is sent via secure communication channels. INTERPOLYS guarantees absolute confidentiality and exclusive access for the client to the data obtained.
TECHNICAL SUPPORT
We use state-of-the-art, high-precision hardware and software systems. Monitoring includes: respiration sensors, a cardiovascular activity sensor, a skin conductance sensor, a blood pressure sensor and a tremor sensor.
Download the full guide
Do you have any further questions?
Trust
starts with honesty
Book a polygraph test today and get clear answers to your questions.
Our competitive advantages
We work directly with you: expert supervision with no middlemen.
— You deal directly with the service provider, with no mark-ups or agency fees.
— Direct contact with an expert: specialist training.
— The specialist takes personal responsibility for the accuracy and objectivity of the report.
— Rapid response times and complete data confidentiality.
High-level professionalism
— Average length of service in the sector: 7 years or more.
— They undergo professional development training every year.
— Strictly adhere to international testing methodologies.
State-of-the-art technical equipment
— State-of-the-art equipment.
— Results are 95–98% accurate.
— Licensed software.
Complete confidentiality and security
— Checks are carried out only with voluntary written consent.
— We operate in strict compliance with international law.
— Ethical requirements and professional standards.
We operate in accordance with the standards set out at
Valencia’s Secrets Under the Control of Technology
Did you know that not even the best-kept secrets of medieval Valencia could remain hidden from a modern lie detector? In a city where secrets were preserved for centuries behind the walls of the majestic Serranos Towers, the truth is now within reach thanks to a professional polygraph service for Ukrainian-speaking residents of Valencia and the entire Valencian Community. The Serranos Towers are one of the main symbols of medieval Valencia, which makes them a fitting image for preserving the structure of the original text.
Our services in Valencia and nearby cities:
We offer a unique service in Ukrainian, eliminating translation errors and taking into account the mentality of our compatriots living in Spain:
✅ Personal matters: Discreet testing related to marital fidelity and the detection of hidden addictions in teenagers.
✅ Home security: Thorough screening of domestic staff, including nannies, security personnel, and household assistants.
✅ Business protection: Investigation of corporate theft and screening of candidates for positions of responsibility within your company.
✅ Legal support: Protection of your reputation in legal disputes—our expert report can become a strong argument in your favour.
Do not let doubts turn your life into a “siesta of anxiety”! Get clear answers in your own language and regain control of the situation today.
Feedback from our customers
Trust is built on honesty. Here you can read real stories from people who have undergone a polygraph test and shared their experiences.