Renal tubular acidosis laboratory findings: Difference between revisions
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==Laboratory Findings== | ==Laboratory Findings== | ||
{| class="wikitable" | {| class="wikitable" | ||
! colspan=" | ! 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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Renal tubular acidosis Microchapters |
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Renal tubular acidosis laboratory findings On the Web |
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American Roentgen Ray Society Images of Renal tubular acidosis laboratory findings |
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Risk calculators and risk factors for Renal tubular acidosis laboratory findings |
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 |