A Hospital in Another World?

Garrett Nordmark sorely missed the fully automated blood analyzers of his previous life. Those devices, once connected to the pipelines and powered on, only needed a test tube of venous blood placed under the probe. The probe would draw the blood, and then the machine would automatically print out a report.

Values measured, reference values, marked with arrows if too high or too low. A tiny tube of blood, capable of testing dozens of items, was no problem at all.

What about the hassle of adding anticoagulants, centrifuging, diluting, and measuring, and then having to clean the machine?

Not at all, the fully automated blood analyzer automatically connected to solutions for hemolysis, dilution, and cleaning. Simply change the solutions regularly, and there was no need for the repeated fuss...

Such a handy device, only over ten thousand per unit. Unfortunately, having crossed into another world, he had nothing.

"Sell me another one, please! I'd pay 100,000 gold coins!"

...Sadly, it was not for sale. Garrett had no choice but to start from scratch, scratching his head:

How do I determine the potassium ion content in the serum?

"Basic Chemistry"...not mentioned... "Pathophysiology"...not mentioned... "Diagnostics"...not mentioned...

Garrett frowned with worry. He really didn't want to resort to this method:

Too much information needed!

Too many calculations!

How many people, how much blood, would it take to slowly find the standard?

But when there were no other methods left, he could only use the dumbest way, bit by bit. Garrett took several tubes of rabbit blood, lined them up, and placed a hand on a golden box:

【Identify Blood】!

【Identify Blood】!

【Identify Blood】!

"MOSS, help me analyze the image, this time there should be only one different point..."

The Tower Spirit MOSS responded with a sound that was a mix between the buzzing of bees and the whirl of a fan. Its pitch was stable, its timbre even, a perfect example of white noise, especially hypnotic.

Garrett didn't know how it had learned this trick... but after a while of entertaining himself with his own voiceovers, MOSS swiped, and displayed several cubes:

"Boss, there are quite a few different points this time, not just one."

Garrett: "..."

So how do I control the variables? How do I control the variables so that only potassium ions are involved?

Andrew Lynn's spells were all used up today! Using spells not yet at his own level that he had just started studying halfway through was very exhausting!

Wait!

I'm just measuring potassium levels, I don't need a spell! I can just inject the same rabbit repeatedly with potassium chloride solution, then draw blood, right?

Garrett rolled up his sleeves and got back to work. One cast of 【Alleviate Pain · Local Anesthesia】, injected 1 ml of 1% potassium chloride solution, waited three minutes, drew blood; then another cast of 【Alleviate Pain · Local Anesthesia】, injected, waited, drew blood...

He drew blood over and over again. Only when the rabbit seemed to be struggling, he finally injected it with a solution of calcium gluconate—a product of glucose, hydrogen peroxide, and calcium carbonate, mainly used to attempt making tofu.

Forgive me, thank goodness the rabbit was still alive. Garrett hurriedly finished writing the experiment records, grabbed the last tube of fresh blood, and cast a spell:

【Identify Blood】!

"MOSS, analyze these pictures again~~~"

This time, Garrett only glanced once at the cubes that MOSS had lit up, and specifically circled the unusual points, before jumping up from his seat.

In a row of cubes, only two points showed a clear linear relationship. One of them was a beautiful light purple, gradually deepening, like a light veil.

Purple.

Purple.

Purple.

The flame color reaction of potassium ions is purple.

Purple!

So, does the color shown in the 【Identify Blood】 meditative imagery have a certain correlation with the flame color reaction?

Garrett's heart pounded wildly. If that was the case, then at least, the sodium and calcium levels in the blood could be determined by flame color reactions. He had solved at least two pieces of the puzzle!

To ensure this approach was feasible, Garrett caught two more rabbits, injecting them with varying amounts of potassium chloride. Then he used 【Identify Blood】 on them, the purple areas showing a clear linear correlation in intensity.

Feasible!

Next, try sodium chloride, no, just add sodium chloride solution to the previously tested tubes!

After adding sodium chloride solution drop by drop, MOSS displayed cubes, some of which showed yellow indicating correlation. Very good, at least blood sodium was

also feasible.

So, then...

Come on, how to determine the exact concentration?

Looking at this color, how to judge whether the potassium concentration is 3.5mmol/L, 4.5mmol/L, or 5.5mmol/L?

"I still want a fully automatic blood analyzer... I'm willing to pay ten thousand gold coins for it..."

But a fully automatic blood analyzer was not available. Garrett had to roll up his sleeves, make a standard solution of 4mmol/L himself, and take a picture with 【Identify Blood】:

It has to read it out... it has to read it out... it has to read it out... if it can't, I'll just have to manually rub a flame ion photometer, and then pray it's sensitive enough!

Well, it's not necessarily the only way, I could also try to write a paper, then tempt the transmutation specialists to do it?

Thank goodness, 【Identify Blood】, even for liquids other than blood, could still interpret the data. Although most of the data was missing, the purple Garrett wanted still showed up in the meditative view and in the cubes displayed by MOSS:

"MOSS, can you compare these colors, which are denser, which are lighter, which are the same?"

"...Yes, boss."

MOSS hummed silently for a moment (probably calculating) before answering affirmatively.

Then, a bunch of cubes began to move, sorting themselves out. The result read from the 4mmol/L standard solution Garrett had prepared was accurately inserted into the lineup. The shades were orderly, distinctly differentiated.

——MOSS even specially drew a red line, connecting the standard solution with a neighboring cube, brightly indicating:

These two are the same...

Very good, since a 4mmol/L standard solution could be prepared, then 3.9, 3.8, 3.7... 5.5, 5.6, these could also be prepared.

It's just a matter of spending more time, preparing them, letting 【Identify Blood】 read them, letting MOSS remember the colors. Then, test one, compare one, test two, compare two!

By the way, the matter of the standard solution, someone else could handle that!

"Mr. Norwood! Mr. Norwood, could you do me a favor, prepare the standard solutions of potassium chloride and sodium chloride, according to... these ratios. If it's convenient, have your students prepare one each as well, to avoid errors!"

"Of course, leave it to me!"

Garrett delegated the work and immediately began calculating how to establish the blood testing process:

Drawing blood... no problem.

Taking a photo with 【Identify Blood】... no problem.

Getting the data... barely no problem. If the patient is willing to pay 10 contribution points for a chip, they can get the data on the spot, sent directly to the mage tower. Can't afford it?

Then blood must be drawn, then treated with anti-coagulation magic, packed in ice bags, and sent directly to the mage tower—either by human delivery or by Apa's deer-powered delivery, hoping the blood doesn't spoil en route...

Then the mage tower compares it, produces results, and sends them back. Even with the fastest Apa delivery, the round trip takes nearly half an hour. If you're unlucky, by the time the data comes back, the patient might already be gone.

"Ah, building a dedicated mage tower in the hospital is still essential!"

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