Ammonia

CPT: 82140
Liver

What This Test Measures

Neurotoxin cleared by liver; elevated in hepatic encephalopathy and urea cycle disorders.

Preparation

No fasting required

General guidelines only. Requirements vary by lab and individual. Confirm with your provider before adjusting any medications.

Turnaround Time

Varies by lab

Clinical Notes

Pre-analytic handling critical (ice, immediate processing); dietary protein affects levels

ICD-10 Codes

Common diagnosis codes associated with this test. Codes are assigned by your provider.

K74.60Unspecified cirrhosis of liver
K76.0Fatty (change of) liver, not elsewhere classified

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Lab Codes

Proprietary codes used by each lab for this test.

ARUP Laboratories
3019004(order_code)
LabCorp
001040(order_code)
Mayo Clinic Labs
NH3V(order_code)
Quest Diagnostics
123(order_code)

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Related Tests

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CPT: 84460

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CPT: 84075

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CPT: 82040

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CPT: 82103

5-Nucleotidase

CPT: 84255

Alkaline Phosphatase Isoenzymes

CPT: 84080

For informational purposes only

This page is for educational and research purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. ICD-10 and CPT codes are assigned by your healthcare provider. Always consult a qualified healthcare provider before ordering any lab test or making decisions about your health.