What are the trace elements? How to check the purchasing standard of trace elements

Who has the purchase standard of trace elements (zinc sulfate monohydrate, ferrous sulfate monohydrate, copper sulfate pentahydrate, manganese sulfate monohydrate) ah,

Trace elements are mainly relative to the main elements, such as protein, sugar for the main elements, such as calcium, iron, zinc, selenium for trace elements.

At present, there is no uniform and accurate standard for trace element detection in the world. Different hospitals may have different data, because different detectors and different reagents have different reference values, so the results may be different. In addition, the results of trace element determination are only a reference value, and there are many factors affecting the results of trace element determination. Lack of trace elements is to supplement, but to use data report + clinical symptoms combined, can not simply superstitious test results, blindly give children tonic, the key is to see whether the child's physical condition has improved.

1, blood

Blood sample collection, can take venous blood or peripheral blood.

The content of trace elements in human body is low, and it is easy to be contaminated in the process of sample collection. Therefore, trace element blood samples should be taken with extra care in the process of collection. In addition to the requirements for sample collection set out in the Technical Specification for Clinical Inspection of Blood Lead issued by the Ministry of Health, special detection tubes for trace elements that have been qualified after regular spot checks should be used, and the test tubes should be sealed with inert and non-polluting materials immediately to prevent the container itself from affecting the test results.

Blood test is easy to be polluted, causing cross infection, inconvenient sampling, reflecting the status of trace elements in the body in a short time, greatly affected by diet and diseases, and only used as clinical guidance.

2. Hair

Human hair includes hair, armpit hair, beard, chest hair, etc., among which hair test is most widely used:

(1) Hair samples are easy to sample and easy to preserve.

(2) For trace elements, the content in hair is higher than that in other parts of the human body such as blood, saliva and urine due to accumulation, and it is relatively stable and easy to analyze.

(3) Hair can reflect the nutritional status of trace elements in the past few weeks to months, so it can truly reflect the storage status of trace elements.

(4) The protein structure of hair can be combined with elements in the environment such as water and atmosphere, and its binding force varies with various trace elements, so trace elements in hair can be used as indicators of environmental pollution. It also shows that hair test can not represent the true level of trace elements in the body. Medical institutions generally do not use hair testing.

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