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Pathology and Laboratory Medicine

We know that a child’s well-being can hinge on how quickly treating physicians can obtain meaningful test results. That’s why the St. Christopher's Department of Pathology and Laboratory Medicine uses advanced methods to offer comprehensive diagnostic procedures on both a routine and an emergency basis. Each of the department’s sections, including Anatomic Pathology, Blood Bank, Chemistry, Cytogenetics, Hematology, Microbiology and Virology, accepts specimen referrals and is staffed by Medical Laboratory Scientists and Medical Technicians who work under the direction of MDs or PhDs.

In addition to the routine tests and pathology evaluation, ​the section of Anatomical Pathology accepts referrals for muscle biopsies (light microscopy, histochemistry) including mitochondrial cytopathies, kidney biopsies (light microscopy, immunofluorescence), Evaluation of mucosal biopsies for Hirschsprung’s disease.

The Cytogenetics lab is a full service lab which provides comprehensive testing services including:

  • Chromosome analysis for prenatal samples, peripheral blood, bone marrow for leukemias and  lymphomas and solid tumors
  • An extensive library of commercially available FISH (fluorescence in situ hybridization) probes to detect constitutional, hematological  malignancies, solid tumor (Touch prep, paraffin embedded tissues, suspension) abnormalities in pediatrics and adults
  • Microarray assays for congenital (pre- and postnatal) disorders and solid tumors

The Cytogenetics Laboratory is run by a team ABMGG Board-certified laboratory director and experienced laboratory staff to ensure that accurate, reliable results are available in a timely manner. The Laboratory works closely with a team of hematopathologists, anatomic pathologists as well as hematologists and oncologists. The laboratory staff members work very efficiently with cost-effective data-driven testing algorithms to optimize test utilization to help individualize patient care.

The Pathology and Laboratory Medicine Department runs a Clinical Laboratory Sciences Program. This Clinical Laboratory Sciences Program insures maintenance and promotion of the excellence in laboratory technology by train​ing the medical technologists of the future. 

The department laboratories are certified by the College of American Pathologists (CAP), the Clinical Laboratory Improvement Act (CLIA) and the Commonwealth of Pennsylvania’s Department of Health. Our blood bank is accredited by the American Association of Blood Banks (AABB), CAP and the Food and Drug Administration (FDA). 

The Department of Pathology and Laboratory Medicine is located on the lower level of the hospital.  

Outpatient ​Blood ​Collection

The outpatient blood collection site is located on the main floor of the hospital in the back of the Admissions suite.  Outpatient blood collection services are offered:

  • Monday to  Friday 7:30 a.m. to 5:30 p.m.

Important Phone Numbers

  • Laboratory Administration: (215) 427-5475
  • Anatomical Pathology: (215) 427-5272
  • Blood Bank: (215) 427-5267
  • Chemistry: (215) 427-5254
  • Cytogenetics: (215) 427-5290
  • Hematology: (215) 427-5260
  • Microbiology: (215) 427-5246
  • Virology: (215) 427-5296 or (215) 427-5297
  • Molecular Genetics: (215) 427-5297

Outpatient ​Testing Facility

The laboratory performs a large variety of routine and specialized pediatric testing services for outpatients. If your insurance company permits testing to be performed at St. Christopher’s, you can bring your doctor’s prescription test orders to the Admissions Department to register. After registration, go to the blood collection site window and sign in. 

Patients testing is either performed or referred by the laboratory at St. Christopher’s. The department laboratory will send results directly to your physician and the physician will communicate the results to you. Please note: Pennsylvania state law prohibits us from giving results directly to the patient.


Quest Diagnostics and Lab Corp of America blood collection site

Patients go directly to the blood collection site window and sign in- no hospital registration is required. Parents will need to have the reference lab test order form and your child’s insurance card.

The department laboratory sends the samples to the reference lab for testing. The reference lab sends results to your doctor. Please call your physician for results.


Our Team

St. Christopher's Hospital for Children in Philadelphia has highly qualified experts who are specially trained to work with the individual and unique needs of infants and pediatric patients. The team is lead by Judy Mae Pascasio, MD, medical director, Pathology and Laboratory Medicine. To view a list of our specialists, click here.


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