Yup, and it was concluded to have been blood. It is really strange that people deny this since it is described in the report including the reasons why the blood test was negative.Blood evidence is left at crime scenes. It is cleaned up, making it invisible to the naked eye. Luminol is applied a couple of weeks later, and the evidence is revealed. That is what happened in this case.
p282
In considering these specimens, one must also consider the possibility that they arose from other sources and are irrelevant to the investigation. But it must be noted that the negative result for blood does not necessarily indicate that no blood was present. The result may have been negative because there was not sufficient material to indicate the presence of blood.
For example RG's last shoe print resulted in a negative blood test. Obviously his shoe prints were in blood. They also give reasons for the negative blood test.
p282
The negative result was also partly a consequence of Dr. Stefanoni's choice to use most of the DNA to determine the individual profiles and only the remainder to attempt to determine the nature of the trace.
Also Stefanoni testified that she could see from the luminol glow that the material was most likely blood. I believe this part of the report talks about that but for some reason the translation is messed up.
p283
Furthermore, since the traces revealed by Luminol ?? it becomes certain that the traces contained human DNA. The fluorescence ?? implies that the biological material (in which appears ?? human) was Luminol-positive.
So overall the verification tests did fail but that still does not mean it is not blood. The luminol test is the far more sensitive test. I don't understand the problem with the bloody footprints. There wasn't a room full of soil or iron. The defense didn't come up with any alternative. RS didn't explain that he walked barefoot there before. It is very weak of the defense just to say it could have been something else besides blood without any further explanation.
My prediction is that the conclusions regarding the luminol prints will be accepted by the appeals court.