Chemistry Calculations — FHIR Questionnaire Template

Electrolytes, calcium, albumin, glucose and insulin with anion gap, albumin-corrected calcium and HOMA-IR.

Scoring

Calculated values only; each result stays empty until all of its inputs are answered.

Questions

1. Sodium (mmol/L)
2. Chloride (mmol/L)
3. Bicarbonate (mmol/L)
4. Total calcium (mg/dL)
5. Albumin (g/dL)
6. Fasting glucose (mg/dL)
7. Fasting insulin (µU/mL)

Calculated results

• Anion gap (mmol/L)
• Albumin-corrected calcium (mg/dL)
• HOMA-IR

Source and license

Source: Standard potassium-free form: Na − (Cl + HCO₃); Payne et al. 1973, BMJ 4:643; Matthews et al. 1985, Diabetologia 28:412. Codes: LOINC.

License: Original wording written for this builder; covered by the project license (non-commercial use with attribution; commercial use needs written permission). Formulas are published methods; see the source. (link)

Provided to save authoring effort, not as medical advice — confirm the scale and its cut-offs for your use case.

Use it

1. Download the FHIR Questionnaire JSON, or
2. open the Builder, choose + Add → From template…, search for “Chemistry Calculations” and insert it. It arrives as one titled group with its calculations wired, and you can keep editing it.

More templates

• Body Measurements
• Kidney Function
• Cardiac Measurements
• Lipid Panel
• FIB-4 Liver Fibrosis Index
• Pregnancy Dating

This material contains content from LOINC (loinc.org). LOINC is copyright © Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the LOINC license.