# Bodansky unit

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The **Bodansky unit** is an obsolete measure of [alkaline phosphatase](/source/Alkaline_phosphatase) concentration in blood. It is defined as the quantity of alkaline phosphatase that liberates 1 mg of phosphate ion during the first hour of incubation with a buffered substrate containing [sodium β-glycerophosphate](/source/Sodium_glycerophosphate).[1] This technique was the first test to measure blood alkaline phosphatase levels, and was developed by [Aaron Bodansky](/source/Aaron_Bodansky) in the early 1930s.[2]

Other units that were used in the past as a measure of blood alkaline phosphatase levels are King-Armstrong units, Kind-King units, and International units.[3] However, the Bodansky unit and those other units have become outdated, and the current standard for measuring alkaline phosphatase is units per liter (U/L).[3]

## References

1. ["Medilexicon.com entry for Bodansky Unit"](https://web.archive.org/web/20160303173233/http://www.medilexicon.com/medicaldictionary.php?t=95668). Archived from [the original](http://www.medilexicon.com/medicaldictionary.php?t=95668) on 2016-03-03. Retrieved 2009-03-18.

1. [Bodansky unit](http://www.whonamedit.com/synd.cfm/4134.html) at [Who Named It?](/source/Who_Named_It%3F)

1. Sauberlich, Howerde. *[Laboratory Tests for the Assessment of Nutritional Status](https://books.google.com/books?id=nay1MOcFRSkC&pg=PA238)*, p. 238 (Second Edition, CRC Press, 1999).

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