Blood Bank
Logistics
The Blood Bank manages the hospital's blood supply—from donor registration and blood collection, to testing, storage, cross-matching, and issuing blood products to patients. It tracks every unit from donation to transfusion. Issue and transfusion auto-create patient invoices from Service Catalog bloodbank products (or the campus default issue price).
What is Blood Bank Management?
Blood Bank Management handles the complete lifecycle of blood products. It manages donor registration (screening and deferral management),blood collection and component separation (whole blood, packed red cells, platelets, fresh frozen plasma), inventory trackingby blood type and expiry date, cross-matching (ensuring donor blood is compatible with the recipient), and issuance for transfusion.
Every unit of blood is tracked with a unique barcode from donation to transfusion. The system enforces compatibility rules and prevents incompatible blood from being issued.
Why Does It Exist?
Blood transfusions save lives but carry serious risks if not managed properly:
- → ABO incompatibility — Giving the wrong blood type can be fatal
- → Expired blood — Blood products have limited shelf lives; expired units are dangerous
- → Donor safety — Unscreened donors or too-frequent donations can harm the donor
- → Wastage — Without proper inventory management, blood units expire unused
How Blood Bank Works
Donor Registration & Screening
A donor registers. They complete a health questionnaire and are screened for risk factors. If eligible, blood is collected. The donor's blood type is determined, and the unit is tested for infectious diseases (HIV, Hepatitis B/C, Syphilis, Malaria).
Component Processing & Storage
Whole blood is centrifuged to separate it into components: Packed Red Blood Cells (PRBC), Platelets, Fresh Frozen Plasma (FFP), and Cryoprecipitate. Each component is labeled with a unique barcode, blood type, and expiry date, then stored at the appropriate temperature.
Cross-Matching
When a doctor orders blood for a patient, the lab performs a cross-match: they mix the patient's serum with the donor's red cells to confirm compatibility. Only compatible units pass. The system tracks which units are cross-matched to which patient.
Issuance & Transfusion
The compatible unit is issued to the ward. The nurse verifies the patient's identity and the unit barcode before starting the transfusion. The patient is monitored during and after the transfusion. The unit is marked as "Transfused" or "Returned."
Every Feature Explained
Donor Management
Register, screen, and track blood donors.
Ensures donor safety and blood supply quality.
Donors complete health questionnaires. The system enforces minimum donation intervals (e.g., 3 months for whole blood) and flags deferrals.
Inventory by Component
Track blood units by type (A+, B-, O+, etc.) and component (PRBC, Platelets, FFP, Cryo).
Different patients need different components. Inventory management prevents shortages and wastage.
Each unit is tracked with barcode, type, component, collection date, expiry date, and status (available, cross-matched, issued, transfused, expired).
Compatibility Matrix
Built-in rules that prevent issuing incompatible blood.
ABO incompatibility is life-threatening. The system prevents the most dangerous medical errors.
Hard-coded rules: A can receive A and O, B can receive B and O, AB is universal recipient, O is universal donor. Cross-match must be verified before issue.
Expiry & Age Tracking
Monitor expiry dates for every blood component.
Expired blood products are dangerous and must never be used.
Units near expiry are flagged. Expired units are automatically locked from issuance. Reports help staff use oldest units first (FIFO).
Transfusion Tracking
Record every transfusion from issue to completion.
Complete traceability for patient safety and regulatory compliance.
Nurses scan patient wristband and unit barcode before transfusion. Start/stop times, vital signs, and any adverse reactions are recorded.
Inventory
Architecture
The Blood Bank system ensures high-fidelity inventory segmentation by type, Rh factor, and component. Expiry is enforced at the database level.
Technical Architecture
| Field | Type | Institutional Role |
|---|---|---|
| unit_barcode | Varchar(32) | Unique unit identifier for tracking. |
| blood_group | Enum | Blood type and Rh mapping (A+, B-, O+, AB+, etc.). |
| component_type | Enum | Whole Blood, PRBC, FFP, Platelets, Cryo. |
| expiry_timestamp | Timestamp | Absolute life-cycle threshold; issuance locked after this. |
Note: Sensitive fields use AES-256 field-level encryption where applicable.
Governance & Power
bloodbank:issuebloodbank:managebloodbank:crossmatchCompatibility Matrix
Hard-coded clinical rules prevent mismatched blood issuance. Cross-match must be digitally verified before release.
Donor Exclusion
Donors with high-risk markers are automatically blacklisted for 3-12 months across the entire institutional network.
Cold Chain Monitoring
Temperature logs for blood refrigerators ensure units stay within 2-6°C throughout storage.