Derick Lim, MS, MLS(ASCP), SC(ASCP)

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Derick Lim, MS, MLS(ASCP), SC(ASCP), is the laboratory supervisor of the Chemistry Laboratory at Children’s Hospital of Philadelphia.

Locations: Main Hospital
Appointments and Referrals: 1-800-TRY-CHOP (1-800-879-2467)


Derick has more than 15 years of clinical laboratory experience at Children’s Hospital of Philadelphia.

Education and Training


Medical Technology - School of Medical Technology, Pennsylvania Hospital, Philadelphia, PA

Board Certification

Medical Laboratory Scientist, ASCP

Undergraduate Degree

BS in Biology - West Chester University, West Chester, PA

Graduate Degree

MS in Cell Biology & Biotechnology - University of the Sciences in Philadelphia, Philadelphia, PA

Titles and Academic Titles

Clinical Laboratory Section Supervisor, Chemistry Laboratory

Departments and Services




Welsh S, Polsky T, Lim D, Warrington S, Boyer D. Pseudohypernatremia due to esmolol: A novel case report of drug interference in laboratory testing. Critical Care Medicine 46(1), January 2018.


McDonnell A, Bride K, Lim D, Paessler M, Witmer C, Lambert M. Utility of the immature platelet fraction in pediatric immune thrombocytopenia: Differentiating from bone marrow failure and predicting bleeding risk. Pediatric Blood & Cancer 65(2), 2017.


Bride KL, McDonnell A, Lim D, Paessler M, Lambert M. Can immature platelet fraction (IPF) be used to assess bleeding risk in pediatric immune thrombocytopenia (ITP) and differentiate ITP from bone marrow failure? A retrospective analysis. Blood 126(23), 2015.



Obstfeld A, Lim D, Lambert M, and Paessler M. Classification of Hypochromic Microcytic Anemia Using Machine Learning Techniques. Annual Meeting of the International Society for Laboratory Hematology 2017.

Obstfeld A, Lim D, Lambert M, and Paessler M. Manual Gating of Sysmex XN Scattergram Data for Accurate Reticulocyte and WBC Count Determinations. Annual Meeting of the International Society for Laboratory Hematology 2017.

Posters and Presentations


Salmon E, Welsh S, Lim D, Polsky T, Hewlett J, Boyer D, Beier U, Vecuronium-Induced Pseudohypernatremia: A Case Report. Eastern Society for Pediatric Research Scientific Meeting 2019.

Awards and Honors

2004, Cum Laude, West Chester University

Leadership and Memberships

Memberships in Professional Organizations

2016-present, American Association for Clinical Chemistry