Use of these codes will keep the directory
more uniform and enable those who need help in specific areas to quickly
determine a member’s specialty.
| AB | Abuse of Aged | AC | Accident Investigations | AD | Accidental Death |
| AG | Armed Guards | AI | Aviation Investigators | AL | Asset/Locating |
| AR | Arson Investigation | AT | Anti Trust | AV | Audio/Video |
| BA | Burglar Alarm | BH | Bounty Hunter | CC | Closed Circuit |
| CE | Criminal Evidence | CH | Child Retrieval | CI | Criminal Investigation |
| CL | Complex Litigation | CO | Consulting | CP | Computer Sec/Crime |
| CR | Corp. Intelligence | CS | Courier Service | CT | Counter Terrorist |
| CV | Civil Investigation | DA | Database | DB | Debugging |
| DD | Due Diligence | DN | DNA | DR | Drug Testing/Searches |
| ED | Electronic Detection | EM | Embezzlement | ES | Espionage |
| ET | Ethics Training | EQ | Equipment Sales | EX | Executive Protection |
| FA | Forensic Accounting | FI | Fingerprinting ID | FO | Forensic |
| FR | Fraud | GD | Guard Dogs | GU | Guards |
| HA | Handwriting Analysis | HO | Homicide | IB | Information Broker |
| II | Insurance Inv | IS | Industrial Surveys | IV | Investigations – General |
| LP | Loss Prevention | ME | Medical Evidence | MH | Missing Heirs |
| MI | Marine Investigators | MM | Medical Malpractice | MP | Missing Persons |
| OC | Occult Crimes | OF | Oil Field Security | PE | Pre Employ Screening |
| PG | Polygraph | PH | Photography | PL | Product Liability |
| PP | Plant Protection | PR | Property/Real Estate | PS | Process Service |
| PT | Patrol | QD | Exam Questionable Docs. | RE | Repossessing |
| RC | Record Searches | RP | Repressed Memory | SE | Security |
| SM | Semen Testing | SS | Store Shopping | ST | Skip Tracing |
| SU | Suicide | SV | Surveillance | TP | Trial Preparation |
| TR | Trademark Violation | TS | Training/School | UC | Undercover |
| VI | Video Depositions | VO | Voice Identification | VS | Voice Stress |
| WA | Watchman Service | WC | Workman’s Comp | WH | White Collar Crime |