Huang Man nodded: "Yes, Fang Team What?"

"so."

Fang Ze also stood up and said, "Use professional methods and machines to re-examine the hair found at the scene of Li Zhuo's case."

Huang Man said: "Okay, is there any point?"

It can be seen that Huang Man is indeed a very good policewoman.

He is beautiful and smart, and the way of asking questions can make Fang Ze feel comfortable, so there is no need to explain

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Explain too much.

"have."

Fang Ze nodded: "Other residues can be ignored, focus on detecting the age of hair growth, the error does not need to be precise, within ten years."

"no problem."

Huang Man nodded, turned around and went to the laboratory.

This is a vigorous woman.

"You guys go ahead, I'll go to the forensic department."

"At the scene of the log cabin, I brought back some samples of the leftover blood. Let's go see what's going on now."

"it is good."

Ding Chunqiu and Luo Bixin nodded.

Inside the Department of Forensic Medicine.

"Xiao Rong."

Fang Ze pushed the door and entered.

Huang Xiaorong was taken aback. She was playing with her mobile phone while eating.

Fang Ze came in so suddenly that she almost threw the phone away.

"Fangfang Team."

Huang Xiaorong quickly swallowed the food, stood up and spoke, looking at him timidly.

Seeing Huang Xiaorong's appearance, Fang Ze smiled and said nothing.

When there are cases, forensic doctors are still very busy.

But there's nothing else going on right now, it's okay to take a break, there's no need to be serious.

The police are people too.

Fang Ze asked as he walked, "Do we have a blood gas analyzer here?"

"Blood Gas Analyzer"

Huang Xiaorong blinked her big beautiful eyes, and said strangely: "That's the equipment only in the hospital, it's not in the bureau."

"Oh"

Fang Ze pondered for a while, and said to himself: "Go to the hospital, it's a bit of a hassle."

Huang Xiaorong looked at Fang Ze and said, "Team Fang, what's the matter, are you going to test something?"

"Ok."

Fang Ze nodded and said, "Check the blood, do you know how to test the blood oxygen saturation?"

Huang Xiaorong was taken aback for a moment, shook her head and said, "I don't know."

This is a bit beyond her ability.

Seeing this, Fang Ze smiled and said, "Come on, I'll teach you."

Hearing these words, Huang Xiaorong's eyes lit up, and she hurried forward to follow behind Fang Ze.

In front of the testing table, Fang Ze dropped a drop of blood on the glass slide, stretched out his hand and said, "Give me a monochromatic light source."

"it is good."

Huang Xiaorong handed a cylindrical tool to Fang Ze.

Fang Ze opened it, and the purple light shone on the glass slide.

At the same time, he said, "This is a non-invasive blood oxygen test."

"When monochromatic light irradiates blood, the amount of light absorbed by blood varies with different components, but many positions are constant."

"Give me another monochromatic light source."

After receiving it, Fang Ze continued: "When two specific light sources irradiate the blood, the absorption will be different due to the different wavelengths."

"By detecting the ratio of the change in absorbance, using, that is, Lambert's law, and according to the definition of oxygen saturation, we can deduce the approximate value of blood oxygen saturation."

"have you understood"

Fang Ze turned his head to look at Huang Xiaorong.

Huang Xiaorong, on the other hand, was in a daze, completely unaware of what the other party was talking about.

Seeing this, Fang Ze smiled helplessly. It seems that this kind of knowledge that is too theoretical is difficult for the other party to accept.

take it easy.

after an hour.

After Fang Ze checked the calculation on the paper, he couldn't help laughing when he saw the final value.

"almost zero"

"Are you kidding me?"

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Chapter 179 Compulsory measures, medical treatment outside prison 【2】

Huang Xiaorong came up.

At the end of the paper is written: 0

"So low!"

Although Huang Xiaorong doesn't understand Fang Ze's detection methods, as a forensic doctor, she still has common sense.

Generally speaking, the value of blood oxygen saturation should be 80, 90, 809 or above.

To be more precise, if it is below 94, it means that the oxygen supply is insufficient.

Below 90 means hypoxemia and needs medical attention.

Even if it leaves the human body, if it is properly preserved and the time is not too long, it should not be less than fifty or sixty 506,506.

0.

, it's really too low.

Fang Ze stared at the value for a while, then turned his head and said, "What do you think?"

Huang Xiaorong quickly shrank her neck, her face flushed slightly.

When they were too close, the other party suddenly turned his head, making them almost kiss each other.

Fang Ze didn't take it seriously, and looked at Huang Xiaorong with encouragement in his eyes.

Huang Xiaorong took a deep breath, suppressed the strangeness in her heart, and said, "It's a bit too low. What year is this blood sample from? No matter what, it must be ten years or more, or even earlier."

Hearing this, Fang Ze smiled and nodded, and said, "That's right, this is not recent blood, even if it is stored at low temperature, it will not be able to prevent the blood oxygen from dissipating."

"As time goes on, there will be less and less."

"Can you guess the approximate age based on the value?"

Fang Ze continued to ask.

Although Huang Xiaorong is young, she still loves to learn, and she also possesses all the qualities required by a qualified forensic doctor.

Given the opportunity, Fang Ze naturally wanted to give some guidance.

Even if you can't teach them hand in hand, it's good to improve the other party's self-confidence.

Regarding this question, Huang Xiaorong frowned and pondered for a long time before saying uncertainly: "Twenty or twenty years"

"It's very close, not bad."

"In the future, you will definitely be a very good forensic doctor."

Fang Ze's appreciation made Huang Xiaorong smile embarrassedly, but the corners of her eyes were filled with joy.

To be recognized by others, especially by an excellent criminal police captain like Fang Ze, Huang Xiaorong's displeasure is false.

"That... the blood oxygen saturation test just now, can you teach me again?"

Fang Ze spoke too fast and acted too fast, she really didn't understand.

Fang Ze picked up the test result, smiled and said, "Time is precious, wait until the case is over."

"Of course, you can also look up information on the Internet. If you have any questions, feel free to ask me."

"See you."

After speaking, Fang Ze turned around and left the forensic department.

Looking at Fang Ze's leaving back, Huang Xiaorong's expression darkened and she was quite disappointed.

In the inner hall.

Fang Ze handed over the detailed test results to Ding Chunqiu.

At the end of the result, a vernacular explanation of the test value was written, so I didn't understand it.

Ding Chunqiu, who had the most emotional fluctuations, was the first to say: "About twenty-five years: true or false"

When speaking, Ding Chunqiu was very surprised.

This is a bit nonsense.

Could it be that the blood from 25 years ago was detected wrongly, and it appeared at the scene where Lang Shiming was attacked, next to the zombie? Luo Bixin couldn't believe it, and said, "Fang Ze, I'm sure it's all right."

Fang Ze glanced at the two of them, and said, "You two guys are going too far, you dare to question my professional level."

This sentence

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, with a joking tone.

Ding Chunqiu smiled and said: "Fang team, it's not a question, it's just what's going on."

He didn't know how to express his doubts.

Luo Bixin stared at the test results in his hand for a long time, and slowly said: "Lang Shiming used Zhu Hepin's blood to create the illusion of being attacked."

"That's right, my mind has finally turned around."

Fang Ze looked at Luo Bixin, smiled and nodded.

Luo Bixin took a light breath, the shock on his face lingering.

If Lang Shiming did all of this, then this man almost spent the first half of his life on revenge.

Since more than 20 years, he has made plans to use Zhu Hepin as a shield. Could it be that all this is Zhu Hepin's default? Where is he now? At the crime scene, the hair"

Just finished speaking, Huang Man walked out of the laboratory, and quickly walked in front of several people.

She handed a document to Fang Ze, and said, "Team Fang, it's been found out. This is the hair of a young man, probably less than 30 years old."

"Combined with the previous test results, it is certain that this is left by Zhu Hepin when he was young."

Luo Bixin and Ding Chunqiu stood up slowly.

The truth seems to be right in front of my eyes.

They never imagined that they would test blood oxygen saturation and hair age.