维生素d35ug相当于多少国际单位

1. d35ug等于多少单位

这里的35ug
实际上指的是μg，即35微克
微克是很小的质量单位
1毫克=1000微克，1克=1000毫克
即1克=1000000即10的6次方微克
所以35μg为0.035毫克，或者3.5*10^-5 克

2. 2.5ug维生素d3是多少国际单位

维生素D3：1ug=40IU

国际标准：1IU维生素D=0.025ug维生素D3

有些药物如维生素、激素、抗生素、抗毒素类生物制品等，它们的化学成分不恒定或至今还不能用理化方法检定其质量规格，往往采用生物实验方法并与标准品加以比较来检定其效价。

通过这种生物检定，具有一定生物效能的最小效价单元就叫”单位”（u）；经由国际协商规定出的标准单位，称为”国际单位”（IU）。国际标准品主要是供给各国来建立和标化自己的国家标准品。对于还没有建立国际标准品的药物可以由本国制订国家标准品。

单位换算

微克为质量单位，质量单位的国际单位为kg，2.5微克(μg)=2.5000e-9千克(kg)。

国际单位制中的质量单位是千克（kg）。

千分之一公斤严格定义为18×14074481个C－12原子的重量。

常用的质量单位为：吨（t），克（g），毫克（mg），微克（μg）。

换算关系：1t=1000kg；1公斤=1000克；1克=1x10^3毫克=1x10^6微克。

3. 3ug是多少国际单位

3ug是120个国际单位。3ug等于3ng。1ng/mL=1ug/L， 因为1ng=0.001ug;，1mL=0.001L所以1ng/mL=0.001ug/0.001L=1ug/L。

维生素D换算是0.025ug=1个国际单位，也就是1ug=40个国际单位。3ug=120个国际单位。

国际单位制

源自公制或米制，旧称万国公制，是现时世界上最普遍采用的标准度量衡单位系统，采用十进制进位系统。

是18世纪末科学家的努力，最早于法国大革命时期的1799年被法国作为度量衡单位。

国际单位制是在公制基础上发展起来的单位制，于1960年第十一届国际计量大会通过，推荐各国采用，其国际简称为SI。

4. 4000毫克d3是多少单位

40国际单位。d3是微克的维生素是国际单位。4000毫克d3是微克的维生素D3有40国际单位。维生素D31微克=40单位国际标准为1IU维生素D=0.025ug维生素D32.8*40=112单位，维生素D3一般每日需要量是400单位。不要过量补充。

5. 50ug/d什么意思

其实就是含药量。不同的药品换算不一样，如1微克的维生素D相当于40国际单位，所以5.5ug的维生素d是220国际单位。
一个”单位”或一个”国际单位”可以有其相应的重量，但有时也较难确定。单位与重量的换算在不同的药物是各不相同的。
1931年国际联盟卫生组织的维生素委员会，首先规定了各种维生素的国际单位；如每1个国际单位的维生素A相当于0.3微克，若是它的乙酸盐则为0.344微克，维生素D相当于0.025微克，维生素E相当于1毫克等等。虽然许多维生素现今已改为重量表示，但维生素A和D仍然沿用国际单位。
各种激素1国际单位折合国际标准制剂的重量为：黄体酮1毫克、绒毛膜促性腺素0.1毫克、垂体激素0.5毫克、催乳激素0.1毫克、胰岛素45.4微克。

6. 维生素当量及单位换算

一个国际单位相当于0.025微克的维生素D3，一微克的维生素D3有40国际单位.所以7.5微克的维生素d相当于300单位的维生素d。 1ug等于40单位的维生素d，7.5ug应该相当于300单位。我们每天维生素d的生理需要量，至少应该在400到600单位。

Vitamin A Technical Details:

Vitamin A is a fat-soluble vitamin. It is important for vision, bone growth and cell division.

Vitamin A consists of Retinol from animal sources, and Provitamin A Carotenoids from plant sources.

Retinol is referred to as pre-formed vitamin A. This means that it can be used directly by the body.

Provitamin A Carotenoids are Vitamin A precursors . This means that they are converted to Vitamin A by the body. However, conversion of the carotenoids is less efficient than that of retinol.

The Provitamin A Carotenoids are beta-carotene, alpha-carotene, beta-cryptoxanthin, lycopein, lutein and zeaxanthin (lutein and zeaxanthin are combined in the current database). The carotenoids are responsible for the red and yellow pigments of plants.

A unit called Retinol Activity Equivalents (RAE) is used to compare the Vitamin A activity of the different forms of Vitamin A. 1 µg (microgram) of retinol is equivalent to 1 µg RAE. However it takes 12 µg beta-carotene to equal 1 µg RAE, and 24 µg of the other carotenoids to equal 1 µg RAE. The following table summarizes the conversion of vitamin A values to RAE:

Historical Measures of Vitamin A

Previously, a unit called International Units (IU) was used to describe Vitamin A activity. However, at the time International Units for Vitamin A were defined (1989), it was thought that beta-carotene was half as concentrated as retinol (beta-carotene is now considered to be only 1/12 as concentrated as retinol).

Because of this, Vitamin A measurements expressed as IU tend to over-state the contribution of the provitamin A carotenoids. The following table summarizes the conversion of Vitamin A values to IU:

When it was determined that IU tended to overstate the contribution of the provitamin A carotenoids, a new unit called Retinol Equivalents (RE) was defined to describe the new values. At the time beta-carotene was thought to be 1/6 as concentrated as retinol. The following table describes the conversion of vitamin A values to RE:

In 2001, the National Academy of Sciences Institute of Medicine (NAS IOM) determined that Vitamin A activity from carotenoids is only half of what was previously believed. To account for this difference, and to avoid confusion, the new unit Retinol Activity Equivalents (RAE) was defined. Retinol Equivalents (RE) are no longer used.

The following table summarizes the relationship between the different measures:

IU Details

At the time of this writing (2004), the RDI (Reference Daily Intake) of Vitamin A is 5000 IU. However, IU is an inaccurate measure of vitamin A activity because it overstates the contributions of the provitamin A carotenoids (by a factor of 6). The FDA (US Food and Drug Administration) is considering changing the RDI to express it in terms of RAE.

Because the conversion of IU to RAE is different for retinol and the carotenoids, you cannot convert IU to RAE (or RAE to IU) for Total Vitamin A unless you know the proportion of retinol to carotenoids in the sample.

For example, knowing that you have 40 IU of Total Vitamin A is not enough information to determine how much retinol and carotenoids you have. 40 IU of Total Vitamin A can come from 12 µg RAE of retinol, or from 2 µg RAE of carotenoids, or from 6 µg RAE retinol plus 1 µg RAE carotenoids, or from many other combinations of retinol and carotenoids. The following table summarizes:

nutraCoster Details

Entering Retinol or Carotenoids Values

When you enter RAE for retinol or any of the carotenoids, nutraCoster automatically calculates the IU and %RDI values for the nutrient.

Finally, nutraCoster willrecalculate the IU and %RDI values of Total Vitamin A based on the new values for retinol and carotenoids.

Example: Suppose you have 80 µg RAE Total Vitamin A, which is composed of 60 µg RAE retinol and 20 µg RAE total carotenoids. The following table lists the values for the example:

Now change the Total Vitamin A RAE to 120 µg RAE. nutraCoster performs the following steps:

Total Vitamin A RAE was the sum of the retinol and carotenoids values, so nutraCoster increases retinol and carotenoids proportionally to 90µg RAE and 30 µg RAE.

The new value of 90 µg RAE for retinol converts to 300 IU and 6 %RDI.

The new value of 30 µg RAE for carotenoids converts to 600 IU and 12 %RDI.

Using the new IU and %RDI values, Total Vitamin A is now 900 IU and 18 %RDI.

The following table shows the results after the change:

nutraCoster performs a similar series of steps when you enter IU or %RDI values for Total Vitamin A.

CarotenoidDetails

When you enter or change a value for Total Carotenoids, nutraCoster checks to see if the Total Carotenoids value was equal to the sum of the indivial Provitamin A Carotenoids before the change. If it was, nutraCoster recalculates the indivial carotenoid values so the sum of the values equals the new Total Carotenoids value, while keeping the proportions the same.

When you enter or change a value for any of the indivial carotenoids, nutraCoster checks to see if the Total Carotenoids value was equal to the sum of the indivial Provitamin A Carotenoids before the change. If so, nutraCoster adjusts the Total Carotenoids value to equal the sum of the indivial carotenoid values after the change.

为了统一计量膳食中的维生素A，而提出的一个概念。其含义是包括视黄醇和β-胡萝卜素在内的具有维生素A活性物质所相当的视黄醇量。

由于人体 维生素A 来源于动物性食物的维生素A和植物性食物中的 胡萝卜素 （ 维生素A原 ），而维生素A的常用计量单位为国际单位（IU），胡萝卜素的常用计量单位为μg（微克）或者mg（毫克），为了统一计量膳食中的维生素A， FAO /WHO（1967）提出了视黄醇当量（Retinol Equivalent, RE)概念。其含义是包括视黄醇和 β-胡萝卜素 在内的具有维生素A活性物质所相当的视黄醇量。

视黄醇当量、 维生素A 、 β-胡萝卜素 的换算关系如下：

1μg β-胡萝卜素=0.167μg视黄醇当量（理论上1分子β-胡萝卜素能形成2分子维生素A，但因为 胡萝卜素 的吸收率为1/3，而吸收后转化为维生素A的 转化率 又只有1/2，所以，1μg的胡萝卜素只能折算为0.556IU维生素A，即0.167μg视黄醇当量。1IU维生素A=0.3μg视黄醇当量）

7. 5ug=多少单位

5ug是5微克。

微克，质量单位，符号μg（英语：microgram）。

换算：

1000 纳克（ng）=1μg

1000 微克（μg）=1㎎（毫克）

1000毫克（㎎）=1g

1000 克=1㎏

1000 千克=1T（吨）

(7)维生素d35ug相当于多少国际单位扩展阅读：

常用质量换算单位：

1 grain 格令 =0.065 gram 克

1 dram 打兰 =1.772 grams 克

1 ounce 盎司 =16 drams 打兰 =28.35 grams 克

1 pound 磅 =16 ounces 盎司 =7000 grains 谷 =0.4536 kilogram 千克

1 stone 英石 =14 pounds 磅 =6.35 kilograms 千克

1 quarter 四分之一英担 =2 stones 英石 =12.70 kilograms 千克

1 hundredweight 英担 =4 quarters 四分之一英担 =50.80 kilograms 千克

1 short ton 短吨 ( 美吨 )=2000 pounds 磅 =0.907 tonne 公吨

1 (long) ton 长吨 ( 英吨 )=20 hundredweight 英担 =1.016 tonnes 公吨