Component
Serum ionized calcium concentration
Independent biological entity. Read linked claims for experimental scope and context.
3 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What acts on it
Common albumin-adjusted calcium formulas generally classified ionized calcium no better than unadjusted total calcium in a 22,658-adult comparison.
Experimental context and source evidence
- availability_state
- biomarker_context Imported condition classification; unverified.
- experimental_model
- Cross-sectional comparison of paired laboratory tests in 22,658 adults in Alberta
- limitations
- Cross-sectional tested population; formulas and patient context differ.
- nutrient_topic
- Calcium research collection; topical membership is not evidence of a direct dietary effect. · Calcium
- organism
- Homo sapiens
- plain_language
- Calculated correction is not a direct ionized-calcium test.
- primary_references
- [desgagnes2025] Use of Albumin-Adjusted Calcium Measurements in Clinical Practice (2025). https://pmc.ncbi.nlm.nih.gov/articles/PMC11751745/ DOI: 10.1001/jamanetworkopen.2024.55251
- research_relationship_category
- biomarker
- tissue_or_cell_type
- Blood
- trigger_kind
- biomarker_context Imported condition classification; unverified.
Calcium: mechanism-first literature curation (2026-09-17) · lines 325–335
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Cross-sectional comparison of paired laboratory tests in 22,658 adults in Alberta · source_derived_draft · unverified_draft
### albumin-adjustment-calcium-misclassification Common albumin-adjusted calcium formulas generally classified ionized calcium no better than unadjusted total calcium in a 22,658-adult comparison. Condition category: biomarker_context nutrient_topic: Calcium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Calculated correction is not a direct ionized-calcium test. organism: Homo sapiens tissue_or_cell_type: Blood experimental_model: Cross-sectional comparison of paired laboratory tests in 22,658 adults in Alberta limitations: Cross-sectional tested population; formulas and patient context differ. research_relationship_category: biomarker [desgagnes2025] Use of Albumin-Adjusted Calcium Measurements in Clinical Practice (2025). https://pmc.ncbi.nlm.nih.gov/articles/PMC11751745/ DOI: 10.1001/jamanetworkopen.2024.55251
Complete structured claim and evidenceIn 691 patients with stage 3-5 CKD, total calcium showed only fair agreement with ionized-calcium classification.
Experimental context and source evidence
- availability_state
- biomarker_context Imported condition classification; unverified.
- experimental_model
- 691 patients with stage 3-5 chronic kidney disease; paired calcium measurements
- limitations
- CKD cohort; albumin correction did not improve prediction.
- nutrient_topic
- Calcium research collection; topical membership is not evidence of a direct dietary effect. · Calcium
- organism
- Homo sapiens
- plain_language
- Total and ionized calcium are different measurements.
- primary_references
- [gauci2008] Pitfalls of measuring total blood calcium in patients with CKD (2008). https://pmc.ncbi.nlm.nih.gov/articles/PMC2488254/ DOI: 10.1681/ASN.2007040449
- research_relationship_category
- biomarker
- tissue_or_cell_type
- Blood
- trigger_kind
- biomarker_context Imported condition classification; unverified.
Calcium: mechanism-first literature curation (2026-09-17) · lines 313–323
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · 691 patients with stage 3-5 chronic kidney disease; paired calcium measurements · source_derived_draft · unverified_draft
### total-calcium-imperfect-ionized-proxy-ckd In 691 patients with stage 3-5 CKD, total calcium showed only fair agreement with ionized-calcium classification. Condition category: biomarker_context nutrient_topic: Calcium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Total and ionized calcium are different measurements. organism: Homo sapiens tissue_or_cell_type: Blood experimental_model: 691 patients with stage 3-5 chronic kidney disease; paired calcium measurements limitations: CKD cohort; albumin correction did not improve prediction. research_relationship_category: biomarker [gauci2008] Pitfalls of measuring total blood calcium in patients with CKD (2008). https://pmc.ncbi.nlm.nih.gov/articles/PMC2488254/ DOI: 10.1681/ASN.2007040449
Complete structured claim and evidenceA mineral/lactose rescue diet normalizes ionized calcium in VDR-ablated mice.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- experimental_model
- VDR-ablated mice and controls fed a mineral/lactose rescue diet
- limitations
- Combined dietary intervention; cannot attribute rescue to calcium alone.
- nutrient_topic
- Calcium research collection; topical membership is not evidence of a direct dietary effect. · Calcium
- organism
- Mus musculus
- plain_language
- Dietary mineral delivery can bypass part of receptor failure.
- primary_references
- [li1998] Normalization of mineral ion homeostasis by dietary means prevents hyperparathyroidism, rickets, and osteomalacia, but not alopecia in vitamin D receptor-ablated mice (1998). https://pubmed.ncbi.nlm.nih.gov/9751523/ DOI: 10.1210/endo.139.10.6262
- reported_effect
- normalizing
- tissue_or_cell_type
- Intestine and blood
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Calcium: mechanism-first literature curation (2026-09-17) · lines 146–156
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · VDR-ablated mice and controls fed a mineral/lactose rescue diet · source_derived_draft · unverified_draft
### vdr-null-mineral-diet-rescue A mineral/lactose rescue diet normalizes ionized calcium in VDR-ablated mice. Condition category: machinery_impairment nutrient_topic: Calcium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Dietary mineral delivery can bypass part of receptor failure. organism: Mus musculus tissue_or_cell_type: Intestine and blood experimental_model: VDR-ablated mice and controls fed a mineral/lactose rescue diet limitations: Combined dietary intervention; cannot attribute rescue to calcium alone. reported_effect: normalizing [li1998] Normalization of mineral ion homeostasis by dietary means prevents hyperparathyroidism, rickets, and osteomalacia, but not alopecia in vitamin D receptor-ablated mice (1998). https://pubmed.ncbi.nlm.nih.gov/9751523/ DOI: 10.1210/endo.139.10.6262
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.