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Are You The Type To Donate Blood?

sugarvalves [1963573]
Blood withdrawal cooldown and life penalties halved from 13th-15th. Blood Bags and Empties not expected to rise or fall in price. Factions warned over blood donor day vulnerabilities.
Vampire Christmas begins in just a few short hours, with World Blood Donor Day scheduled to run from noon on the 13th to noon on the 15th of June. During this time, all blood withdrawals will cost you 50% of the usual life, while also adding just 50% of the usual cooldown time. Here is a list of interesting things you may or may not wish to know about this forthcoming event.


Sorry, You're Not My Type


The blood of Torn's citizens may be saturated with high levels of alcohol, but once you burn that off you'll see that each of the eight major blood groups is represented. The most common blood type in Torn is O-positive, with 37.4% of people lubricated by this variant, hence why it's also the cheapest blood on the item market. Conversely, AB-negative is the rarest type, running through the veins of just 0.6% of the population.

AB-negative (0.6 percent)
B-negative (1.5 percent)
AB-positive (3.4 percent)
A-negative (6.3 percent)
O-negative (6.6 percent)
B-positive (8.5 percent)
A-positive (35.7 percent)
O-positive (37.4 percent)

To find out your blood type, you must suck a cut and guess complete the BIO2127 Intravenous Therapy education course. Once you've done that, you must purchase an Empty Blood Bag, either from the Item Market or, if you've unlocked it, the Pharmacy. After using an empty bag, a filled blood bag will appear in your inventory, thus allowing you to see which blood type you have.


Pictured: I have A+ blood because I did well in school.


It's A Blood Bath

Sucking out your own body juice usually costs you 30% of your life while increasing your medical item cooldown by 60 minutes. With your cooldown limit now being 6 hours, this means you can fill 54 Empty Blood Bags over the course of a typical 48-hour period.


Pictured: What happens when you try to fill 55 bags.

During World Blood Donor Day, with life and cooldown penalties halved to 15% and 30 minutes respectively, we calculated that you could fill 108 empty blood bags... if you're an absolute psycho. The link above will take you to last year's article on blood day, within which you can find a number of strategies and tips on how to max out your blood donations while also getting a reasonable amount of sleep.

But what should you do with all those blood bags now that you've hoarded them? Sell your blood to sanitary towel manufacturers so they can quit using that weird blue liquid in their commercials? No. Don't do that.


Bad Blood


The use of a compatible Blood Bag reduces your hospital time by 120 minutes and boosts your life by 30%, with each use coming at the expense of 30 minutes of cooldown. Blood Bags are therefore quite useful during wars, hence why many factions like to run a blood drive during World Blood Donor Day to increase their faction stocks.

However, not all blood is made equal, with some types being more broadly compatible than others. Players with O-negative blood can shove their red stuff into anyone they like, as this is the only universal blood type. But in a cruel twist of fate, O-negative people can only receive O-negative blood - giving isn't always better than receiving.

At the other end of the spectrum, we have AB-positive donors, whose blood is much like an NFT, in that it's completely useless to anyone bar the person who owns it. But while AB-positive blood can only be used by AB-positive people, AB-positive people can receive any type of blood safely, because - and this the genuine scientific terminology - they are absolute blood sluts.


Larger Link

That table shows you which types of blood can be donated to whom, and which blood each type can receive. Getting this wrong will result in an acute hemolytic transfusion reaction taking place, and you will be sent to hospital for 90 minutes. This is actually quite useful in some instances, such as when you suspect you're about to be buymugged, or that nurse you're stalking on Instagram has a day shift.


Blood Debt


World Blood Donor Day often has a significant impact on the price of bloods and empty blood bags. In 2021, over 212,000 empty blood bags were filled during the course of the event, with this total representing a huge increase from the 137,000 used the year prior. This demand typically sees the price of empties spike somewhat in the run-up to WBDD, but only by a few hundred dollars.

This year, the price of an Empty Blood Bag is already high due to the demand created by Ranked Warring participants, meaning prices may not have much more room to rise. When last we checked, there were still a few hundred empties available at the Pharmacy for just $15k, so if empties do rise in price, make sure you're not overpaying for no reason.


Pictured: Empty Blood Bag one-year price graph. Larger Link

If you're hoping to lean into the dystopian element of this event and sell your blood to the rich, those with AB-negative will command the highest prices, with their red mess currently going for $32,000 a pouch. There are just over 300,000 bags of AB-negative in circulation, and only 0.6% of people have this blood type. However, AB-negative people can use any negative blood type, so the high value of AB-negative blood, which can only be used by AB-negative or AB-positive people, is something of a mystery.

O-positive blood is compatible with four blood types, those being O-positive, AB-positive, A-positive, and B-positive. These four types account for 85% of the population, so you'd think that the demand for O-positive would be high. However, since AB-positive people can receive any type, and both A-positive and B-positives can receive four other types, this leaves O-positive people as the main market for their own blood, given that they can only receive this or O-negative.

As a result, O-positive blood is the cheapest on the market, selling for just $17,800 at the time of writing - just six bucks more than an empty! If previous trends are followed, O-positive's high circulation amount of over 5,000,000 units will see its price insulated from the effects of WBDD, but you may see a slight, albeit temporary fall in the price of the other, less common bloods once the event has ended.


Cold Blooded

The cooldown and life gains provided by blood bags are unaffected by World Blood Donor Day, but that doesn't mean there aren't advantages to be had in warring during this event. If, for example, you were to discover that a rival faction was running a blood drive between the 13th and 15th, that means that many of their members would have their cooldowns maxed out, or at least partially used.

A faction with shortened cooldowns won't be able to last as long during a fight, making them a prime target for anyone looking to attack. The scheduling of Ranked Wars between Thursday and Saturday means that WBDD won't overlap with any ranked wars unless they've overrun from the weekend, but if your territorial or chaining rivals are draining themselves dry this week, this could be the perfect time to declare war while they are weakened.

tl;dr: 50% life and cooldown penalties for blood withdrawal from noon TCT on 13th to noon TCT on 15th


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