At Laboratory Medicine, we study the molecular and cellular components of blood and other body fluids. This work is crucial to diagnosing and managing illness and understanding the mechanisms and origins of disease.Our physicians, known as clinical pathologists, provide consultations to other doctors regarding optimal laboratory diagnostic approaches and the interpretation of complex laboratory tests. Our team includes pathologists, scientists, phlebotomists, medical technicians, technologists, and others who perform important support functions for our state-of-the-art laboratory. We are available every day, 24 hours a day, for physicians. We perform approximately 10 million tests each year, and also provide specialized high-tech testing to other hospitals in the Yale New Haven Health System and institutions throughout New England, and as far away as Puerto Rico. We also operate multiple satellite facilities and patient service centers located throughout the state. We ensure that every test we offer—at every location—is accurate and reliable. When physicians request to have patients’ blood drawn, here is what happens: Collection: A doctor, nurse, technician, or phlebotomist will draw the patient’s blood. Several tubes may be needed for different types of tests. Depending on what illness the patient might have, his or her doctor may want to obtain a urine sample, throat swab, or other sample. After the sample is collected, the container is labeled with the patient’s name and other information. The sample is received and processed by the Laboratory, and testing begins: Chemistry Testing Blood and other bodily fluids are tested for chemicals, drugs, and substances that indicate disease. We check cholesterol and other tests for risk of heart disease, glucose to monitor diabetes, or thyroxin to monitor the thyroid gland. Hematology Testing We analyze the amount and function of blood cells and plasma. Examples include the Complete Blood Count (CBC) that tells the doctor how many cells of each type are in the patient’s blood, and the prothrombin time (PT) to measure the time it takes for the blood to clot. Microbiology Testing We test a variety of specimen samples for infections caused by bacteria, fungi, or parasites. We often do urine cultures for urinary tract infections. Virology Testing We test for viral infections. This includes rapid tests for respiratory viruses such as influenza, molecular tests for noroviruses, and antibody tests for HIV. Immunology/Molecular Diagnostics Some tests are used to determine whether the immune system is functioning properly. State-of-the-art analysis of DNA and RNA is used to test for a variety of diseases and for the risk of developing certain diseases. Other specialized tests include the ANA, used to screen for autoimmune disease, and Factor V Leiden genotyping for patients with blood clots. Tumor Profiling Laboratory This lab analyzes tumor DNA to predict the sensitivity or resistance of tumors to a

We are internationally recognized for developing an immunologic treatment for advanced cutaneous T-cell lymphomas. Extracorporeal photochemotherapy (ECP), or photopheresis, is one of the safest and most effective treatments available for this type of cancer. Our experienced team of physicians and nurses administers photopheresis daily on an outpatient basis. We treat more than 1,000 patients each year. The procedure was first developed by Yale's Richard Edelson, MD.He and his team are pioneers and leaders in this technique, and continually conduct research to further improve ECP to help treat cancer and other disorders. During ECP, the patient’s blood is treated with a photosensitizing agent and exposed to specific wavelengths of light to eliminate cancerous cells from the blood and activate the immune system’s T-cells. With immune cells primed to fight off cancer, blood is then returned to the body. ECP is also effective for treating a number of inflammatory diseases.

The Hematology Program at Smilow Cancer Hospital offers comprehensive diagnosis and treatment of blood cancers: lymphoma, leukemia, and myeloma. While the causes of these cancers remain unknown, great strides in treatment, some of which originated from Yale Cancer Center research, are improving survival rates. The overall aim of treatment is to bring about a complete remission. Treatment approaches for blood cancers may include chemotherapy, radiation oncology, stem cell or marrow transplantation, or immunotherapy. Each patient receives an individual treatment plan, which includes standard care and/or clinical trials, which offer novel treatment options. Yale hematopathologists employ the complete range of diagnostic tools available, including bone marrow examination, bone imaging, M protein analysis, cytogenetics, immunophenotyping, and FISH and PCR analysis, as well as genetic testing and the identification of markers that guide prognosis. Additionally, patients have access to caregivers who help them cope with the physical, emotional, and psychological issues related to these cancers. Advanced practice nurses and social workers assist with education, general information, and practical issues of travel and accommodation assistance. The blood cancers we are fighting: Lymphoma is the most common blood cancer, affecting 81,000 Americans each year. While its rates continue to rise, there have also been rapid advances in treatment, and the current 5-year survival rate for all people diagnosed with Hodgkin lymphoma is 87%. Leukemia is a malignant cancer of the bone marrow and blood, diagnosed in 60,000 Americans each year. It is the most common cancer in children and teens. The leukemia death rate for children ranging from birth to age 14 in the United States has declined 60% over the past three decades, due to treatment advances. Myeloma is a disease of the plasma cell, and affects approximately 34,000 new patients annually. Overall survival in patients with myeloma has shown improvement in recent years, with treatments recently approved by the Food and Drug Administration (FDA). Monoclonal gammopathy of undetermined significance (MGUS) is a precursor condition that could potentially lead to cancer and should be closely evaluated and monitored. Our myeloma specialists are dedicated to the care of these patients and see them as part of a MGUS Clinic. Stem Cell Transplant The Stem Cell Transplant Program at Smilow Cancer Hospital is a FACT accredited program that was started in 1994 and currently performs around 200 transplants yearly. We perform stem cell and bone marrow transplants for a variety of malignant and benign diseases in both pediatric and adult populations. There are two types of stem cell transplantation that we perform: Autologous transplant: involves using a patient’s own stem cells, whichare collected from their blood and frozen. Allogeneic transplant: involves receiving stem cells from another person, called a donor. A search