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 Reference Values During Pregnancy
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Anion gap (serum, plasma)

   Units Nonpregnant Adult First Trimester Second Trimester Third Trimester
mmol/L 10 - 17  10 - 20 10 - 18 11 - 18
         

Anion Gap = (Na+ + K+) - (Cl- + HCO3-)

During pregnancy the Anion gap shows a net increase of 1 to 2 mmol/L from the nonpregnant state

See Also: Anion Gap Calculator


References:

1. Lockitch G. Handbook of Diagnostic Biochemistry and Hematology in Normal Pregnancy. Boca Raton:CRC, 1993.pp 14, 22

 

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