Smart Money Moves in Crime Scene Blood Detection

In crime scene investigations, blood is a big deal. It can solve murders, rapes, and other serious crimes. But how do experts know if the blood is human? Two methods were put to the test in Pakistan.

Method 1: Anti-Human Hemoglobin (Ah-HB)

• Special Tool: Uses Anti-Human Hemoglobin (Ah-HB).
• Cost: Cheaper.
• Sensitivity: Not as sensitive as the second method.
• Performance:
• Accurate in identifying human blood.
• Did not confuse animal blood.
• Struggled with very diluted blood samples.

Method 2: Seratec HemDirect (S_HD) Strips

• Special Tool: Uses Seratec HemDirect (S_HD) strips.
• Cost: More expensive.
• Sensitivity: Can detect tiny amounts of blood, even when diluted.
• Performance:
• Better at detecting diluted blood.
• More expensive per test.

Which Method is Best?

• If money is tight: Ah-HB is a good option.
• If detecting very small amounts of blood is crucial: S_HD might be better.
• Both methods are reliable, but they have different strengths and weaknesses.

Conclusion

It's all about making smart choices. Forensic labs need to balance cost and accuracy to solve crimes effectively.