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  #1  
Old 03-19-2008, 12:38 AM
Anu Moses
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Default conversion of nanograms to micromoles

I need to convert a 1683.2 ng/ul of a primer to nanomoles/ul.please help
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  #2  
Old 03-19-2008, 04:05 AM
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Default Re: conversion of nanograms to micromoles

Just divide by the molecular weight, which is also the molar mass in g/mol.
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Old 11-04-2008, 03:01 AM
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Default Re: conversion of nanograms to micromoles

5-aminosalicylic acid (5-ASA): 4.3 mol/L, Pl.convert to nanogram/mL.
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Old 08-07-2009, 10:06 AM
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Default Conversion from micromoles/L to ng/ml

Id to know how to convert .04 micromoles/L of progesterone (M.W. 314.4668) to ng/ml. thanks alot for your time.
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Old 08-07-2009, 10:23 AM
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Default Re: Conversion from micromoles/L to ng/ml

Quote:
Originally Posted by heliozoo View Post
Id to know how to convert .04 micromoles/L of progesterone (M.W. 314.4668) to ng/ml. thanks alot for your time.
Thanks for finding the MW. It is also the molar mass in grams per mole. This simplifies your problem to prefix manipulation

0.04 mol/L x 314.4668 g/mol = 12.579 g/L
Since 1000 ng = 1 g, and 1000 mL = 1L, the two factors of 1000 will cancel, and it is also 12.579 ng/mL.
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Old 08-24-2009, 05:37 PM
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Red face Re: conversion of nanograms to micromoles

I'm trying to convert 3.10 umol/L of selenium to ng/ml. Molar mass of selenium is 78.96g/mol. As I understand from previous calculations that should equate to 244.78 ng/ml. Unfortunately this falls outside the reference range while the 3.10umol/L falls well within the reference range. So i just wanted to be sure I was doing my calculations correctly....
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Old 08-25-2009, 03:35 AM
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Default Re: conversion of nanograms to micromoles

Quote:
Originally Posted by Unregistered View Post
I'm trying to convert 3.10 umol/L of selenium to ng/ml. Molar mass of selenium is 78.96g/mol. As I understand from previous calculations that should equate to 244.78 ng/ml. Unfortunately this falls outside the reference range while the 3.10umol/L falls well within the reference range. So i just wanted to be sure I was doing my calculations correctly....
Yes, you did it right:
3.10 mol/L x 78.96 g/mol = 244.78 g/L (or ng/mL)
(probably should be rounded to 245 g/L)

You might check the desired units, though. Many blood tests stated as mass/volume are stated per deciliter (dL, equal to 0.1 L or 100 mL). The above would be 24.5 g/dL.
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Old 11-16-2011, 09:13 AM
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Default Re: conversion of nanograms to micromoles

Can some one please tell me how to achieve a final concentration of 100 pM ACTH F.W. 2933, in a final volume of 10 ml? I have an aliquot stock of ACTH at a concentration of 100 ng/l?
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  #9  
Old 11-16-2011, 01:02 PM
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Default Re: conversion of nanograms to micromoles

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Originally Posted by John View Post
Can some one please tell me how to achieve a final concentration of 100 pM ACTH F.W. 2933, in a final volume of 10 ml? I have an aliquot stock of ACTH at a concentration of 100 ng/l?
is F.W. the same as the molecular weight?

If so, you want 10mL of concentration 100pM (picomoles per litre).

The weight you need is 10(mL)/1000(mL) x 2933(pg) x 100(pM) = 2933pg in 10mL (or 2.933ng in 10mL).

This requires 0.02933L of your stock.

You probably should do a 1 in 100 dilution on your stock to be able to reliably get 2.933ng. Even at a 1:100 dilution, this is still only 2.933L diluted stock required.
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  #10  
Old 12-06-2011, 07:32 AM
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Default Re: conversion of nanograms to micromoles

Can someone please tell me how to convert nanograms/gram (lipid weight) to uM?

I would like to convert 188 ng/g to uM. The substance has a MW of 641.7 gram/mole.
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