UTMB Laboratory Services provides Clinical and Anatomical Pathology services to UTMB Hospital and Clinics, the Texas Department of Criminal Justice (TDCJ), and various other community agencies and physicians.
This guide is designed to provide a convenient compendium of information of the services offered by the department, as well as to describe the logistics involved in the ordering of tests. In many instances, the complexities of biological testing in the modern laboratory cannot be completely described in print and users should avail themselves of the expert advice offered by the professional and technical staff of the department.
Note: Tests sent out to ARUP, our primary reference lab, are specified in the test menu and linked to the ARUP search engine.
NEW! Order of Draw and Processing Time for Blood Specimens
Blood must be allowed to clot completely prior to centrifugation. Minimum clotting times are determined by the type of collection tube as
shown in the table below.
Sample Time of Collection
Effective April 1, 2012, the time of collection for samples must be provided on each requisition.
The laboratory will reject (not test) samples when the requisition is missing the time of collection.
Refer to the Test Request requirements on the Specimen Collection
page of the LSG for requirements. This change is necessitated to comply with CLIA federal regulations for TEST REQUESTS.
Minimum Volume Requirements
Effective April 1, 2012, the laboratory will reject (not test) samples that do not meet the minimum volume requirements
specified in the Laboratory Survival Guide for each test. This change is necessitated to comply with manufacturer's
instructions for each test and federal CLIA regulations for SAMPLE SUBMISSION, HANDLING, and REFERRAL.
Sample Processing and Storage
The laboratory must comply with manufacturer's instructions for each test and federal CLIA regulations for SAMPLE SUBMISSION,
HANDLING, and REFERRAL. Specimen processing and storage instructions are included for each individual laboratory test.
The laboratory will reject samples that do not meet collection, processing and storage requirements as specified.