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Diagnostic Laboratory Department

Diagnostic Laboratory Department comprises 6 units namely: Histopathology, Microbiology, Parasitology, Hematology and Blood Transfusion, Clinical Chemistry, and Mortuary. All laboratory units with exception of Mortuary unit are located within the Central Pathology Laboratory (CPL) building. Diagnostic Laboratory Department plays a critical role in providing timely, high quality laboratory services to all patients referred to MNH and also to private patients (those without referrals).

It is the leading diagnostic laboratory service provider in Tanzania. It also offers referral laboratory services for all rare tests for other Institutions including private hospitals as it is served by highly qualified pathologists in all laboratory disciplines. All units in this department are computerized and results are posted in Jeeva System for clinicians to view on line in the wards or clinics. To ensure efficiency in reports dispatch, the department uses a laboratory information system (LIS) that is interfaced with all analyzers and hospital information management system (HIMS), the Jeeva System.

Histopathology and Cytopathology Unit

The unit has both, modern automated tissue processing and tissue staining machine which, in conjunction with best management practices, produces quality results for biopsies. Cytology samples processed and reported such as Pap smears, Fine Needle Aspiration (FNA), fluid Cytology, Exfoliative Cytology samples, Buccal smears for Barr bodies and Seminal fluid analysis for infertility investigations. This unit also performs also immunohistochemical and special stains on tissue biopsies.

Parasitology Unit

This unit is responsible for diagnosis of most parasitic organisms in urine, stool and blood. For malaria diagnosis both rapid and conventional test methods are applied. Other tests done in this unit includes Bence Jones proteins and Occult blood in stool.

Microbiology Unit

This unit has the latest MGIT- 960 TB System and BactAlert 3D blood culture system. Due to considerable high number of results involved here, the Laboratory information system has become handy in ensuring timely results capture for both internal and external clients.

Some specialized tests in this section include:-

Highly sensitive bacterial identification system to species level. Antibiotic susceptibility testing using quantitative results in MIC values (E- test method). Serological tests which employ highly sensitive kits aimed at target decision making by the clinicians.

Molecular section of the Microbiology Unit.

The section is responsible for advanced molecular biology DNA/RNA test for HIV. It is equipped with state of Art ABS Themacy 9700. Some of the routinely done tests include HIV Viral load, Hepatitis B Virus antigen, Hepatitis C Virus antibody and PCR DNA test to detect HIV infection in infants below 18 months of age born to HIV infected mothers. Other serological tests done in this unit include Rubella serology, Toxoplasma serology and IgG, Anti – Streptolysin O Titer (ASOT) and Rheumatoid Factor.

Hematology and Blood Transfusion Unit.

Haematology unit is responsible for analyzing samples of patients requested by clinicians such as full blood picture (FBP) in anemic patients to find out the cause of anemia, Erythrocyte Segmentation Rate (ESR) and other tests for blood related diseases including blood cancers whereas blood Transfusion Unit deals with pre and post donation counseling of blood donors. The section also deals with screening of all internally donated blood for HIV, Hepatitis B and C and Syphilis from relatives of patients who are to undergo elective operations in the hospital.

Furthermore, this section is the one responsible for issuing safe and screened blood to all patients in need of blood within the hospital. Hematology Unit is equipped with four main analyzers which also relay reports directly to the hospital information system. The unit has state of the art equipment which includes; cell Dyne 3500, Cell Dyne 3700, Celltac Hematology analyzers, Facscount and the ACL Coagulation equipment. Other than routine tests in hematology and blood transfusion, this laboratory has strengths in analyzing coagulation studies for: Factor VIII, Factor IX, Lupus Anticoagulant, Hb – electrophoresis, Prothrombin Time (PT), Partial Prothrombin Time, Bone Marrow Aspiration smears and trephine biopsies as it is manned by highly qualified haematologists.

Clinical Chemistry Unit.

This unit has fully automated machines including one State of Art Architec 8000 machine, and a double (combined) State of Art Architec 4100 machine capable of analyzing both immunological, hormonal assays, metabolic tests cardiac enzymes Each of these machines has the capability of testing 1,200 samples per hour. Both machines are interfaced with Jeeva System and results are viewed immediately online by clinicians.

Mortuary Unit.

This unit has 14 modern fridges which can preserve 56 bodies at a time. This unit has got highly qualified pathologists who conduct medical, legal and clinical autopsies accompanied with timely reports of the same.

Guiding Principles


MNH has a social responsibility to improve the health of future generations. Guided by fundamental ethical principles of access and equity and in compliance with related laws and regulations, MNH will work with integrity in the pursuit of high quality clinical services. Respect Our patient and our workforce are our greatest resources. We are committed to a patient centred hospital environment and workforce built on respect for diversity, trust, communication, and institutional teamwork at all levels within the organization. .


Our patience and workforce are our greatest resources. We are committed to a patient centred hospital environment and workforce built on respect for diversity, trust, communication and institutional team work at all levels within the organization.


MNH will accomplish objectives by using all available resources to continually ensure best value for patients and stakeholders. This strategic planning process directs available resources to achieve strategic goals in the most cost effective manner. MNH shall collaborate with the Ministry of Health (Government), Muhimbili University College of Health Sciences (MUHAS), Muhimbili Orthopaedic Institute (MOI), Ocean Road Cancer Institute (ORCI), the Dar es Salaam Municipal and other referral hospitals to deliver the highest quality services within existing resources.


MNH is committed to ensure the security of the Hospital. MNH will work proactively with patients, employees, and Hospital security officials to maintain a secure work environment for patients, staff, and Hospital assets.

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