County of Los Angeles Los Angeles County
Chief Executive Office

Class Specification: CRIMINALISTICS LABORATORY TECHNICIAN

ITEM NUMBER: 4331

APPROVAL DATE: 06/06/2001

DEFINITION:
Performs standard chemical procedures to analyze specimens of evidentiary material.

CLASSIFICATION STANDARDS:
Positions allocable to this class report to a Supervising Criminalist and are responsible for performing standard test procedures such as gas chromatography, extraction of toxicological specimens, immunoassay technology, preparation of reagents, processing and extraction of evidence of DNA, identification of biological fluid on evidence and general technical support for higher level criminalist classes. Incumbents follow step-by-step procedures as prescribed by laboratory management and they are not free to modify or deviate from the prescribed procedures without consultation or approval from higher-level laboratory personnel. These positions require incumbents to exercise a knowledge of analytical chemistry and instrumental methods of analysis and safety practices.

EXAMPLES OF DUTIES:
Prepares standard chemical solutions and reagents to specific requirements by mixing various concentrations of chemical compounds.

Performs routine chemical analyses on biological samples and bulk-controlled drug specimens.

Operates a gas chromatograph for the routine analysis of specified classes of evidence submitted to the laboratory.

Performs routine toxicology extraction procedures of blood and urine specimens and prepares extracts for subsequent analysis.

Operates an immunoassay instrument to screen urine specimens for drugs of abuse.

Prepares reagents for use in forensic biological procedures. May perform special projects requiring routine chemical analysis, under close supervision.

Assists higher-level laboratory personnel by performing routine laboratory tests and analyses of evidentiary specimens, as directed.

Performs routine extraction procedures and screen tests on sexual assault kit evidence.

Prepares evidence collection kits (e.g., GSR, sexual assault kit, ect.) under close supervision.

Orders supplies, packages, and documents evidence.


MINIMUM REQUIREMENTS:

TRAINING AND EXPERIENCE:
Successful completion of 60 semester units from an accredited college, including three semester units in each of the following subjects:general chemistry, quantitative analysis, and organic chemistry, or their equivalent in quarter units. The quantitative analysis course may have been included in a year's course in general chemistry totaling eight college semester units or their equivalent in quarter units.

LICENSE:
A valid California Class C Driver License or the ability to utilize an alternative method of transportation when needed to carry out job-related essential functions.

PHYSICAL CLASS:
3 - Moderate.