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Sodium, Blood

Sodium, Blood is a topic covered in the Davis's Lab & Diagnostic Tests.

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General

Synonym/Acronym:
Serum Na+.

Common Use:
To assess electrolyte balance related to hydration levels and disorders such as diarrhea and vomiting and to monitor the effect of diuretic use.

Specimen:
Serum collected in a gold-, red-, or red/gray-top tube. Plasma collected in a green-top (heparin) tube is also acceptable.

Normal Findings:
(Method: Ion-selective electrode)

AgeConventional & SI Units
Cord126–166 mEq/L or mmol/L
1–12 hr124–156 mEq/L or mmol/L
12–24 hr132–159 mEq/L or mmol/L
24–48 hr134–160 mEq/L or mmol/L
48–72 hr139–162 mEq/L or mmol/L
Newborn135–145 mEq/L or mmol/L
7 d–1 mo134–144 mEq/L or mmol/L
2 mo–5 mo134–142 mEq/L or mmol/L
6 mo–1 yr133–142 mEq/L or mmol/L
Child–Adult–older adult135–145 mEq/L or mmol/L
Note: Older adults are at increased risk for both hypernatremia and hyponatremia. Diminished thirst, illness, and lack of mobility are common causes for hypernatremia in older adults. There are multiple causes of hyponatremia in older adults, but the most common factor may be related to the use of thiazide diuretics.

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Citation

Bladh, Mickey Lynn., and Anne M. Van Leeuwen. "Sodium, Blood." Davis's Lab & Diagnostic Tests, 7th ed., F.A. Davis Company, 2017. Nursing Central, nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425089/all/Sodium__Blood.
Bladh ML, Van Leeuwen AM. Sodium, Blood. Davis's Lab & Diagnostic Tests. 7th ed. F.A. Davis Company; 2017. https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425089/all/Sodium__Blood. Accessed April 26, 2019.
Bladh, M. L., & Van Leeuwen, A. M. (2017). Sodium, Blood. In Davis's Lab & Diagnostic Tests. Available from https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425089/all/Sodium__Blood
Bladh ML, Van Leeuwen AM. Sodium, Blood [Internet]. In: Davis's Lab & Diagnostic Tests. F.A. Davis Company; 2017. [cited 2019 April 26]. Available from: https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425089/all/Sodium__Blood.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Sodium, Blood ID - 425089 A1 - Bladh,Mickey Lynn, AU - Van Leeuwen,Anne M, BT - Davis's Laboratory & Diagnostic Tests UR - https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425089/all/Sodium__Blood PB - F.A. Davis Company ET - 7 DB - Nursing Central DP - Unbound Medicine ER -