If a CBC (Complete Blood Count) specimen was rejected for testing by the hematology department despite being filled completely and labeled properly, there could be several potential reasons for the rejection:
1. Hemolysis: Hemolysis refers to the rupture of red blood cells, leading to the release of hemoglobin into the sample. Hemolysis can occur due to rough handling of the sample during collection, transportation, or processing. Hemolyzed samples can affect the accuracy of CBC results, and if the specimen showed signs of hemolysis, it could have been rejected.
2. Clotted specimen: If the blood specimen clotted before it could be processed for CBC testing, it might have been rejected. Clotting can occur if there was a delay in processing the sample or if the blood was not mixed with an anticoagulant properly.
3. Insufficient volume: Even if the tube appears to be filled completely, there is a specific volume requirement for CBC testing. If the specimen did not meet the required volume, it might have been rejected.
4. Contamination: If there was any contamination in the specimen, such as the presence of bacteria or other foreign substances, it could have led to the rejection.
5. Incorrect tube or anticoagulant: Different types of tubes with specific anticoagulants are used for different laboratory tests. If the wrong type of tube or anticoagulant was used for CBC testing, the specimen might have been rejected.
The specific reason for rejection would depend on the policies and procedures of the hematology department where the specimen was being tested. Contacting the department directly would provide the most accurate information on why the specimen was rejected.