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"Does it hurt?" Meizi asked Ah Jing anxiously, don't look at the time when she didn't do it just now, she was eager to try, but now it's her turn, when she wants to take this blue blood collection needle to prick other people's fingers, she is afraid that Ah Jing will hurt again.

"It doesn't hurt." Seeing that Meizi couldn't get down three times or twice, Ah Jing used the tip of a needle to draw on his finger several times, although it didn't puncture the skin, but it felt quite painful.

So he took a blood collection needle himself, and as the chief had just demonstrated, he broke off the plastic round sleeve on it, revealing the tip of the needle hidden inside, and then used it to gently prick it on his left ring finger.

The needle of the blood collection needle is very sharp, only a prick, the red blood beads came out of the fingers, saying that it doesn't hurt is lying to Meizi, after all, ten fingers are connected to the heart, but it is not as painful as imagined, he just now even the irritating pain of alcohol disinfection has come, these small injuries and small pains are naturally not a problem.

Although the small blood bead came out, it did not drip onto the glass piece because Ah Jing squeezed it hard there, it was still hanging high on his fingers, Ah Jing was a little helpless, so he had to ask Huang Shi, "Chief, do I want to make this hole bigger again?" ”

Huang Shi didn't expect this to happen, but he recalled his original blood flow at the blood station, and remembered that it seemed that the doctor directly took the glass piece and came up, "No, no, you just just take your finger and wipe it on the glass piece." ”

"Meizi, give me a cotton swab." After Ah Jing left two drops of blood on the glass piece, he saw that Meizi was still a little stunned, so he hurriedly reminded him.

Meizi reacted at this time, "Oh, oh, here, here." He quickly took a cotton swab from the box and handed it to him.

After Ah Jing took the cotton swab, he used his big finger and ring finger to clamp it together. Then, according to the format that Huang Shi just said, he wrote his name, age, and other information, and waited for the red girl's reagent to drip and the test results.

Because Hong'er is just doing the work of absorbing and dripping the reagent, the steps are very simple, natural and fast, but you should also be careful not to confuse the reagent, so she has a word in her heart, the left one should drop A serum, and the right one should drip B serum.

Seeing that Miss Hong'er had already dripped the reagents, Ah Jing also filled in the contents of the reagents on both sides, and handed it to Huang Shi after writing, "Chief, is this all right?" ”

"Okay, but there's one more thing we're missing."

"What's the matter with the chief?" Ah Jing thinks it's perfect, and that's what he did just now.

"Give me the pen." After speaking, Huang Shi took the pen from Ah Jing's hand, and said in his heart that it was a water pen, if it was a ballpoint pen, he would have to find another way.

Ah Jing saw that after the chief took the pen, he made a five-pointed star mark at the end of the glass piece, and then returned the pen to himself, and after thinking for a while, he understood and laughed.

"You understand?"

"Yes, chief, I see."

Hong'er and Meizi looked at Huangshi and Ah Jing as if they were dumbfounded, and what they said was incomprehensible, they were simply confused, but they were embarrassed to ask.

"Okay, that's good, but I'll need to add another man." Huangshi found that in addition to the omissions in the operation process, there was also a shortage of manpower, because one person was responsible for disinfection, blood collection, and hemostasis, one person was responsible for dripping reagents, and then another person recorded the test results, which was simply perfect, and it was completely comparable to the "assembly line division of labor" of other traversers.

If it's just a few people to test their blood type, or the time requirement is not so urgent, then of course you can check one by one, just sit quietly and wait for the results to come out, but now there are more than 50 people waiting for the back, and you really can't do this.

If you want to speed up, you have to wait for the results to come out in the style of "division of labor on the assembly line", which is actually the reason why Huangshi was in front and arranged for Yu Guangtao and a few of them to move the table, but he forgot to arrange another person to run the order alone.

Huang Shi looked into the crowd and beckoned to a person sitting in the middle of the first row below, "Come here." ”

"Hello chief, did you just call me?" The man hurriedly ran to Huangshi, and it turned out to be a thin young man.

"yes, what's your name?" Huang Shi saw that although his face was a little faceless, but what he spoke was an official dialect with a Shandong accent, he was surprised and a little kind, so he also asked a special question.

"Chief, I, my name is Zhou Damu." Zhou Damu didn't expect the chief to ask his name in official dialect, and he was overjoyed, for the first time in more than a year in Fujian, he heard an official dialect with a northern accent.

"Okay, Oki, I'll make a note of it." When Huang Shi heard his name, he remembered that he would feel embarrassed, because Chen Youxin had his name in the list of friends who came up in the newspaper, but he should have been unkempt that day, and then he didn't know where Lu Dao was, so he didn't notice him.

"Chief, what do you always command?"

Hearing the tone of the guy that often appears in this elephant sketch, Huang Shi laughed, "Hehe, Da Mu, you help me take this piece of glass and paper to that table, and press this piece of paper under this piece of glass, there is blood on this piece of glass, you must take it flat and put it down, don't let it tilt, do you know it?" ”

……

"Chief, let's have my blood tested." After Hong'er saw that Zhou Damu had taken away the paper and glass pieces, she took out another piece of glass from the box and said to Huang Shi.

Huang Shi waved his hand, "You and Meizi don't need it, just let them come up and test them one by one." ”

He thought to himself that there were more than fifty people sitting here, first excluding the old man and children, and then removing the sick and weak young man like Zhou Damu, there were at least thirty people in this young and middle-aged person, and according to the probability, there would definitely be seven or eight type A blood.

"Good, chief."

So under Hong'er's greeting, starting from Yu Guangtao, the people sitting below were all called up one by one. Because it was because of the change of object, Meizi did not have the "mercy and cherishing the jade" just now, she waited for others to sit down, then asked everyone to stretch out their left hand, and then used a cotton swab with alcohol to disinfect their fingers, and then took the blood collection needle and pricked it "fiercely".

"Chief, why do you have to pierce your ring finger?" Ah Jing saw that those people were pierced by the plum "whooping", it can be said that their heads were full of black lines, and thought that it was good that her fingers were not pierced by her, if it was scary like this, but he remembered that the chief had just specially confessed that he could only use the ring finger of his left hand to collect blood, so he asked.

Huang Shi didn't think about this problem before, just because every time he went to the hospital or blood donation station, the doctor let him stretch out his ring finger, but now that Ah Jing asked, he thought about it carefully, and found that the reason for stretching out his left hand is actually very simple, nothing more than the following two points.

First of all, it is convenient and safe to operate, because the hand is the most flexible and free-moving organ in the daily exposed parts of the human body. It can be stretched and contracted, and can actively cooperate with doctors, making it easy for doctors to operate.

In addition, the fingertips of the hand have a very rich capillary network, but there are no large arteries and veins, which can not only meet the needs of blood collection, but also avoid a large amount of bleeding, and hemostasis is also very convenient.

The second is to take blood with the left hand, which affects very little function, although the blood collection is a minor human trauma, and it is considered an aseptic operation, but the small wound still needs several days to be completely repaired.

Because most people use their right hand to work and live, fine motor skills are generally done with the right hand, and the left hand has more free time. Therefore, the blood collection and selection of the left hand will affect the function of the hand less.

The above was the reason why Huang Shi could think of collecting blood from his left hand, and as for what would be the ring finger, he guessed that it might be related to the least frequent use of it. In fact, in addition to the three reasons he thought of, the doctors chose the location of the blood test, and the fact that after the ring finger was traumatized, its sequelae were small, and the pain was also light.

Because of the large amount of activity of the human hand, in terms of anatomy, the flexor tendon of each finger is wrapped by a synovial sac, which plays a physiological role in lubricating and resisting vibration and reducing friction. The size, depth, and circulation of the synovial sac vary from finger to finger.

The synovial sacs of the index finger and ring finger are relatively independent and do not communicate with each other. In addition, the synovial sac of the ring finger is located in the superficial part of the palm, so even if there is an infection, it will not cause deep lesions in the palm of the hand and will not involve other fingers.

In addition, the fingers are rich in nerve endings, and they are one of the most sensitive parts of the human body. However, the innervation of each finger is different, and the corresponding pain threshold is also inconsistent. The inner aspect of the ring finger is innervated by the ulnar nerve, and the lateral aspect is innervated by the median nerve.

If blood is pricked in the middle of the fingertip of the ring finger, the terminals of the ulnar nerve and the median nerve will be stimulated at the same time, causing more pain; If the inside of the tip of the ring finger is pricked, only the ends of the ulnar nerve will be pulled, so the range of sensing is the least, and the pain is relatively mild.

The seemingly simple question is quite complicated in principle, and Huang Shi doesn't know the deep-seated reason, he can only follow the cat and the tiger, and tell the three of them that the blood collection should be pricked on the left ring finger, as for which part to pierce, he did not mention.

Huang Shi didn't know about the Dao, and Meizi naturally didn't know the Dao, so she found that what Brother A Jing said just now didn't hurt, but it changed in her hands, and the people who were pierced grinned one by one, calling it hurt, which really made her feel aggrieved.