No.
It is reasonable to assume, IMO, that both dogs alerted to traces of blood on or near the surface of the tile.
Then the officer to whom the blood underneath the tile was attributed cut himself in the process of removing the tile.
AFAIK, Eddie did not alert to fresh blood. I don't know about Keela. But it is immaterial.
If the blood came from one of the officers removing the tiles, it is not what Edie and Keela alerted to. At a minimum, more blood is required.
Please provide a cite for the officer cutting himself removing a tile? As it was filmed I think you are mistaken.
"I bring to your attention in accordance with instructions received, that today, around 20h00, LPC Assistant Specialists Fernando Viegas and Lino Rodrigues, after seeing recorded images relating to the canine inspection conducted on 31 July 2007 in apartment 5A of the Ocean Club, duly explained in an official statement in the case file, they proceeded to collect [recover] the floor tiles where the dogs used in the activity indicated [alerted to] the possible existence of blood traces along with the position of a cadaver in that location.
Those tiles were lifted from the floor, in a way to preserve the possible traces intact for them to be subjected to examination by an authorised laboratory.
The activity was filmed in a way to illustrate the manner in which the uplifting was performed and the tools used, allowing that the experts would have a better understanding of all the circumstances inherent in the removal action. This resulted in the recordings of two video cassettes (Mini DV) which are attached.
The LPC officers are going to produce the official report.
That is all I have to advise.
Inspector, Joao Direito."
https://www.mccannpjfiles.co.uk/PJ/BLOOD.htm