Back to catalog

Internal Medicine · Emergency Medicine · Nephrology

Delta Gap Ratio (ΔAG/ΔHCO₃⁻) calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

mmol/L

Allowed range: 100–180 mmol/L

Quick picks
mmol/L

Allowed range: 70–140 mmol/L

Quick picks
mmol/L

Allowed range: 0–50 mmol/L

mmol/L

Allowed range: 6–16 mmol/L

Quick picks

Reference anion gap used for delta calculations; 12 mEq/L is a conventional adult reference value.

mmol/L

Allowed range: 20–28 mmol/L

Reference serum bicarbonate used for delta bicarbonate; 24 mmol/L is a common laboratory reference midpoint.

Result

5 fields remaining

Anyone can run this calculator. Sign in to save, favourite, or send the result.

Ruqelo is AI and can make mistakes. Check important information.

Clinical inputs

  • Serum sodium (mmol/L)Accepted range: 100 to 180
  • Serum chloride (mmol/L)Accepted range: 70 to 140
  • Serum bicarbonate (mmol/L)Accepted range: 0 to 50
  • Reference anion gap (mEq/L)Accepted range: 6 to 16
  • Reference serum bicarbonate (mmol/L)Accepted range: 20 to 28

Primary source

Wrenn K. The delta (delta) gap: an approach to mixed acid-base disorders. Ann Emerg Med. 1990;19:1310-1313. DOI: 10.1016/S0196-0644(05)82292-9. PMID: 2240729. Scope: delta gap ratio = Δanion gap / Δbicarbonate, where Δanion gap = measured anion gap − reference anion gap and Δbicarbonate = reference bicarbonate − measured bicarbonate. (1990)

View source