Which statement most accurately describes how a routine venous blood specimen for a complete blood count differs from a forensic urine specimen in terms of handling requirements?
- AThe complete blood count tube must be sealed with tamper-evident tape, while the forensic urine specimen can be transferred without a custody record.
- BThe forensic urine specimen requires a custody and control form with sealed transfer, whereas the complete blood count tube requires patient-identified labelling and standard requisition handling. Correct
- CBoth specimens require identical chain of custody documentation because any biological specimen could be used as legal evidence.
- DThe complete blood count tube must be frozen during transport, while the forensic urine specimen is transported at ambient temperature without any seal.
Why A is wrong: This reverses the actual practice. Tamper-evident sealing and a custody record are required for the forensic specimen, not for the routine clinical draw, so it is a tempting but inverted answer.
Why B is correct: Forensic urine collection follows a separate medico-legal workflow with a custody and control form and tamper-evident seals, while routine clinical specimens rely on accurate two-identifier labelling and the standard requisition.
Why C is wrong: Routine clinical specimens are tracked through standard requisitions and labels, not full chain of custody. Candidates may overgeneralise the principle of traceability, but the formal custody process is reserved for medico-legal collections.
Why D is wrong: EDTA whole blood for a CBC is transported at room temperature or refrigerated, not frozen, and forensic urine is sealed and tracked. The option pairs two incorrect handling claims that a hurried candidate might accept.