Minimal Risk Human Subject Research and a Closer Look at Expedited Category 2

Institutional Review Board

Human Research Protections (HRP)

Minimal Risk Human Subject Research and a Closer Look at Expedited Category 2

May 15, 2025

 

Federal regulations define minimal risk as the probability and magnitude of harm or discomfort anticipated in the research are not greater in and of themselves than those ordinarily encountered in daily life or during the performance of routine physical or psychological examinations or tests. Risks to be considered include those that may place subjects at risk of criminal or civil liability or damage the subject’s financial standing, employability, insurability, reputation or be stigmatizing.  All reasonable risks of research procedures should be considered. For additional examples of minimal risk in varying contexts and populations, visit this guidance document.

 

For research to qualify as minimal risk, research procedures must (1) meet the definition of minimal risk AND (2) fit into one of the Expedited Review Categories. These categories apply regardless of age, unless otherwise noted. Protocols involving minimal risk are received by a subcommittee of the IRB, on a weekly, rolling basis.

A Closer Look at the Use of Expedited Category 2:

(a) from healthy, nonpregnant adults who weigh at least 110 pounds. For these subjects, the amounts drawn may not exceed 550 ml in an 8-week period and collection may not occur more frequently than 2 times per week; or

(b) from other adults and children [2], considering the age, weight, and health of

 

the subjects, the collection procedure, the amount of blood to be collected, and the frequency with which it will be collected. For these subjects, the amount drawn may not exceed the lesser of 50 ml or 3 ml per kg in an 8-week period and collection may not occur more frequently than 2 times per week.

What is a Venipuncture?

NIH defines a venipuncture as “a procedure in which a needle is used to take blood from a vein, usually for laboratory testing. Venipuncture may also be done to remove extra red blood cells from the blood, to treat certain blood disorders. Also called blood draw and phlebotomy.”

 

A venipuncture does not include arterial blood collection.  In addition, venipuncture does not include the use of a lancet-type device to collect capillary blood. The UCI IRB has been receiving research protocols that include  the use of various lancet devices, including the Tasso device.  Research protocols requiring use of this device, should be submitted for convened IRB review.

 

When involving phlebotomy, be sure to (re)review HRP Policy # 13. Phlebotomy outside of a clinical setting must follow specific procedures to ensure human subject safety. 

Questions? Visit HRP Office Hours

 

 

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