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Both 5% and 25% albumin USP have a calculated osmolarity near 300 mOsm/L. How do I calculate that? The package inserts for both strengths state they contain 145 mEq/L of sodium. Since for each cation there must be an anion, that puts the osmolarity at 290 mOsm/L. The contribution of albumin to the total osmolarity is minimal. One mole of albumin is about 70,000 grams, so a 50 mL vial of albumin 25% (12.5 grams albumin) would only contribute about 3.57 mOsm/L to the total osmolarity. Hospital pharmacists are warned not to dilute 25% albumin with water to make 5% albumin because the osmolarity of the final product is too low. - Marty, R.Ph.

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16y ago
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10y ago

150 kDa

Considering that the average molecular weight of an antibody molecule is approximately 150,000 Dalton, ...

Padlan EA. Anatomy of the antibody molecule. Mol. Immunol. 1994;31:169-217.

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13y ago

It would very much depend upon which protein you are talking about. Every protein is different.

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8y ago

Each protein has specific formula, a chain of peptides formed from aminoacids.

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8y ago

Proteins are made by amino acids.

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12y ago

9000

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11y ago

Albumin

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11y ago

9000 g/mol

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Q: What is the molecular formula for albumin?
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