I can't believe how ignorant people are. I am no medic, but even I know menstrual "blood" is only a small percentage of actual blood. The rest being various body fluids. Of course the first thing Stefanoni would do would be to establish this, and so she did and said the blood in the bathroom was not of that type. Full stop.
I doubt men give much thought to what constitutes menstrual blood.
Please provide evidence that Stefanoni established this was not menstrual blood by scientific testing. As I said earlier, I can find no mention of this anywhere except for your claim that it exists in Darkness Descending. Your say-so is not evidence.
If you do not provide this evidence, than I can only conclude that you cannot.
By the way, DD is full of false information. For example, these I found on TJMK quoting DD:
"On campus, back in the US, Amanda had been fined for being drunk and disorderly at a party held in a fellow student’s house. During the incident she had also insulted the police."
False. She was given a NOISE violation. There was no charge of being drunk and disorderly nor any note by the officer of having insulted him.
"He posted pictures of himself on the internet wrapped in blood-covered bandages, brandishing a meat cleaver, and wrote a weird story to go with the images. "
False. His friend, Angelo Cirillo, testified he had wrapped him in toilet paper as a gag. No blood was involved at all...not even simulated.
Russell also claims the "murder knife" was "found to have been scrubbed with bleach".
False. Never proved and contradictory to the prosecution claim that MK's DNA was on the knife. Scrubbing with bleach would have destroyed any DNA.
Darkness Descending is full of proven incorrect and plain false info.