Laboratory Services

The Department of Laboratories at University Medical Center of Princeton at Plainsboro offers a wide range of clinical testing procedures, using state-of-the-art instruments to provide physicians and their patients with timely, accurate results. Each year, the department performs more than 900,000 laboratory tests. Services include phlebotomy, clinical chemistry, clinical hematology, clinical microbiology, blood banking and histology.

Laboratory Outreach clients may download a staff contact list by clicking here .

The laboratories offer convenient hours for outpatient testing at five different sites:


UMCPP Laboratory Patient Service Center
Medical Arts Pavilion
5 Plainsboro Road, Plainsboro, NJ
609.853.6880 Fax: 609.853.7873
Hours:* Monday, Wednesday, Thursday, Friday 7 a.m. to 6 p.m.; Tuesday 7 a.m. to 7 p.m.; Saturday 8 a.m. to 12 p.m.


East Windsor 

UMCPP Laboratory Patient Service Center
300A Princeton-Hightstown Road, Suite 103, East Windsor, NJ
609.252.8751   Fax: 609.252.8752
Hours:* Monday through Friday, 7 a.m. to 5:30 p.m.; Saturday 8 a.m. to 1:30 p.m.


Hamilton Y Draw Site
1315 Whitehorse/Mercerville Road
Hamilton, NJ 08620
609.838.7339 Fax: 609.838.9880
Hours: *Tuesday through Friday, 7 a.m. to 3:30 p.m.; Saturday 8 a.m. to 12 p.m. 

Monroe Township

UMCPP Laboratory Patient Service Center
Forsgate Centre Medical Building
11 Centre Drive, Suite A, Monroe Township, NJ
609.395.2455 Fax: 609.409.3986
Hours:* Monday, Tuesday, Wednesday & Friday, 8:30 a.m. to 2 p.m

UMCPP Laboratory Patient Service Center
Princeton Medicine
2 Centre Drive, Suite 200, Monroe Township, NJ
609.395.2447  Fax: 609.860.5288
Hours:* Monday through Friday, 8:30 a.m. to 2 p.m


UMCPP Laboratory Patient Service Center
Outpatient Laboratory Area
281 Witherspoon St., Basement Level, Princeton, NJ
609.853.6200  Fax: 609.497.0986
Hours:* Monday through Friday, 8 a.m. to 4:30 p.m.

*Hours are subject to change, so we recommend calling first before visiting to confirm.

Physician offices throughout Central New Jersey refer patients for routine screening tests as well as complicated diagnostic procedures. Patient insurance information is required for all test order requests.

The department’s point-of-care testing program brings advanced diagnostic testing to the patient’s bedside to expedite the testing process. The expanding outreach program provides services for long-term care facilities, home healthcare providers and physician offices throughout the Central Jersey region.