Lab Enrollment
| ENROLLMENT GROUP | DATES |
| Graduating senior priority group – some sections restricted to specialized majors (L restriction) | Nov. 17th (by enrollment window) – Dec. 8th at noon |
| Graduating senior priority group – all sections | Dec. 8th at noon – Dec. 12th at noon |
| All School of Bio Sci majors who meet the prerequistes | Dec. 12th at noon- Dec. 15th at 5:00pm |
| Open enrollment – no major restrictions | Dec. 18th at noon – Jan. 2nd at 5:00pm |
| LAB DROP DEADLINE | Jan. 2nd, 2026 |
Bio Sci D111L
Bio Sci E112L
Bio Sci E115L
Bio Sci E186L
Bio Sci M114L
Bio Sci M116L
Bio Sci M118L
Bio Sci N113L
*Bio Sci D103 or D104 can be taken as prerequisite or corequisites. Students must first enroll in the corequisite course (appear in their Study List) before they can be cleared to enroll in the lab. Once this step is complete, please use the CHAT during our regular business hours to request lab clearance.
An L restriction is set for specialized majors. The following sections will initially be restricted for:
Bio Sci D111L, Lab 1 – Developmental & Cell Biology and Biomedical Engineering: Premedical majors
Bio Sci E112L, Lab A7 – Physiology & Exercise Sciences majors
Bio Sci E115L, Lab A – Ecology & Evolutionary Biology majors
Bio Sci M114L, Lab 1 – Biochemistry & Molecular Biology and Microbiology & Immunology majors
Bio Sci M116L, Lab 5 – Biochemistry & Molecular Biology and Microbiology & Immunology majors
Bio Sci M118L, Lab 9 – Biochemistry & Molecular Biology and Microbiology & Immunology majors
Bio Sci N113L, Lab 5 – Neurobiology majors
On Dec. 8th at noon all lab sections will become available to the rest of the graduating senior priority group.
Please see our “When will I be able to enroll in labs?” section to check when additional lab restrictions will lift.
For lab enrollment, we prioritize School of Bio Sci students who are closest to graduation, which we group under the following graduating senior priority group:
Fall 2022 (or earlier) freshmen
Fall 2024 (or earlier) transfer students
Any Dunlop School of Biological Sciences student with a REASONABLE graduation application on file
At the beginning on Week 7 (Nov. 10th), these students will automatically be pre-cleared for all the labs they meet the prerequisites for.
If you are part of the graduating senior priority group, you will automatically be pre-approved for all the labs you meet the prerequisites for at the beginning on Week 7 (Nov. 10th).
You can check lab clearances by going to StudentAccess → Student Profile → Enrollment → Course Eligibilities.
If you believe you should have access to a lab that does not appear on your course eligibility list, email biosciadvising@uci.edu at least 2 business days BEFORE your enrollment window.
Due to the high demand for upper-division labs, we recommend students submit their graduation applications 1 year in advance.
Students can submit their graduation application on StudentAccess → Applications → Graduation.
Other Course Enrollment
Restriction Codes:
A – Prerequisite required
B – Authorization required
C – Fee required
D – Pass/not pass option only
G – Lower-division only
J – Upper-division only
L – Major only
N – School major only
O – Non-school major only
X – Separate authorization codes required to add, drop, or change enrollment
The following courses have an early drop deadline of Jan. 2nd, 2026 at 5:00pm
Bio Sci 100
Bio Sci D170
All Bio Sci labs (courses with an L suffix)
Late drops or switches (which require a drop to add another lab/section) will NOT be allowed after the early drop deadline. Students may add OPEN Bio Sci labs through the first meeting of the lab. After the early drop deadline, students should email biosciadvising@uci.edu for assistance enrolling in OPEN labs.
Bio Sci labs (specialized majors) – Dec. 8th at noon. Other restrictions will still be in place, please check our “When will I be able to register for labs?” section for more details.
Bio Sci E139 – Dec. 12th at noon
Bio Sci M131 – Dec. 12th at noon
All Bio Sci courses – Dec. 18th at noon
All students will be able to enroll in any Bio Sci course they meet the prerequistes for starting on Dec. 18th at noon.
The following courses will remain reserved for specific majors or programs throughout the enrollment process:
Bio Sci 197 – Contact the instructor for authorization
Bio Sci D113 – Genetics major only
Bio Sci 191B – Global Sustainability minors only. Contact the instructor for authorization
Bio Sci E117B – Exercise Sciences majors only
Bio Sci N115B – Neurobiology majors only
Bio Sci N120B – Human Biology majors only
The enrollment system does not automatically read courses taken outside UC Irvine. If you are trying to enroll in a Bio Sci course, please fill out the Bio Course Prerequisite Clearance Form. We will process your request within 3 business days. For non-Bio courses, you need to contact the academic unit offering the course.
BEFORE submitting the form please check your eligibility:
Repeat restrictions for all Bio Sci courses will lift on Dec. 18th at noon.
The enrollment unit limit will switch from 18 to 20 units on Dec. 18th at noon.
Students looking to enroll beyond 20 units will need to submit an Excess Units Petition by Friday of Week 2 of Winter quarter.
Bio Sci will NOT allow students to enroll in classes with overlapping meeting times, regardless of instructor approval. Students should also ensure they do not enroll in classes with overlapping final exam periods.
UC Online Enrollment
To be eligible to enroll in UC Online courses, UC Irvine students must:
UC Online enrollment requests take about 10 business days to process. Students must start the process as early as possible to ensure they are able to enroll in their intended courses BEFORE the start of the quarter.
The approval process first goes to the student’s major advisors (2-4 business days) and then to the Registrar’s Office (2-5 business days).
Student can verify they have successfully enrolled in the course once it appears on their Study List.
Yes, any UC Online courses will count towards your 12 unit minimum to be considered a full-time student.
Yes, any UC Online courses will count towards your initial 18 unit limit. This restriction will switch from 18 to 20 units on Dec. 18th at noon.
Students looking to enroll beyond 20 units will need to submit an Excess Units Petition. Based on the processing timeline for UC Online enrollment, please be sure to submit this form at least 3 weeks BEFORE the start of the quarter.
It depends. Some UC Online courses MAY be used to repeat UC Irvine courses and replace previous grades, following our Repeat Policy.
However, students must FIRST receive approval from their major department. To request approval from the School of Bio Sci, please email biosciadvising@uci.edu.
Yes, Math 19A and Math 19B at UC Santa Cruz (through UC Online) are approved repeats for Math 2A/5A and Math 2B/5B respectively.
Grade replacement will follow our Repeat Policy.