Renal tubular acidosis laboratory findings: Difference between revisions

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==Laboratory Findings==
==Laboratory Findings==
{| class="wikitable"
{| class="wikitable"
! colspan="2" |Laboratory Findings
! colspan="4" |Laboratory Findings
|-
|-
! colspan="2" |Common laboratory findings
! colspan="2" |Other tests to consider
|-
!Test
!Finding
!Test
!Test
!Finding
!Finding
Line 13: Line 18:
|Serum HCO<sub>3</sub>
|Serum HCO<sub>3</sub>
|↓
|↓
|Serum aldosterone
|Low in aldosterone deficiency states
Normal/ high in aldosterone resistance
|-
|-
|Serum Chloride
|Serum Chloride
|↑
|↑
|Urine anion gap
|Absence of ammonia
|-
|-
|Serum Na
|Serum Na
|Normal
|Normal
|Measurement of fractional urine
bicarbonate excreation
|Bicarbonateuria in proximal RTA
|-
|-
|Serum Potassium
|Serum Potassium
|Variable
|Variable
|Furesimide test
|pH >5.5 and elevated potassium (distal RTA)
pH >5.5 and normal potassium (aldosterone deficiency)
|-
|-
|Arterial Ph
|Arterial Ph
|↓
|↓
|Urine glucose
|Urine glucose +
Serum glucose normal  Fanconi syndrome
|-
|-
|Serum anion gap
|Serum anion gap
|Normal
|Normal
|Fractional excretion of amino acids
|
|-
|-
|Urine Ph
|Urine Ph
|>5.5
|>5.5
|Urine HCO<sub>3</sub> infusion
|PCO<sub>2</sub> does not rise in distal RTA
|}
|}


==References==
==References==
{{reflist|2}}
{{reflist|2}}

Revision as of 18:51, 15 May 2018

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ; Associate Editor(s)-in-Chief: Aditya Ganti M.B.B.S. [2]

Overview

Laboratory Findings

Laboratory Findings
Common laboratory findings Other tests to consider
Test Finding Test Finding
Serum HCO3 Serum aldosterone Low in aldosterone deficiency states

Normal/ high in aldosterone resistance

Serum Chloride Urine anion gap Absence of ammonia
Serum Na Normal Measurement of fractional urine

bicarbonate excreation

Bicarbonateuria in proximal RTA
Serum Potassium Variable Furesimide test pH >5.5 and elevated potassium (distal RTA)

pH >5.5 and normal potassium (aldosterone deficiency)

Arterial Ph Urine glucose Urine glucose +

Serum glucose normal Fanconi syndrome

Serum anion gap Normal Fractional excretion of amino acids
Urine Ph >5.5 Urine HCO3 infusion PCO2 does not rise in distal RTA

References