| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Chromium | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Titanium | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Tin | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Indium | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Zirconium | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Vanadium | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Selenium | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Gold | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Bismuth | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Tungsten | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Iridium | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Nickel | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Iron | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Tellurium | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Silver | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Antimony | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Tantalum | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Mercury | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Arsenic | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Palladium | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Cobalt | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Rhodium | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Gallium | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Yttrium | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Cadmium | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Copper | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Molybdenum | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Thallium | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Technetium | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Osmium | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Ruthenium | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Germanium | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Platinum | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Zinc | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Manganese | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Lead | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Heavy metal screen, Reinsch method | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy metals measurement | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy metal measurement, quantitative | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Strontium measurement | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Uranium measurement | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Encephalopathy caused by heavy metal | Causative agent | True | Heavy metal | Inferred relationship | Some | 1 | 
| Neuropathy caused by heavy metal | Causative agent | True | Heavy metal | Inferred relationship | Some | 1 | 
| Chronic tubulointerstitial nephritis caused by heavy metal | Causative agent | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy metal food poisoning | Causative agent | True | Heavy metal | Inferred relationship | Some | 1 | 
| Evaluation of aluminum stores | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Plutonium measurement | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy metal screen on blood | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy metal screen, qualitative | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Toxic effect of iron compound | Causative agent | False | Heavy metal | Inferred relationship | Some |  | 
| Aluminum measurement, blood | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy metal screen on bile | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Aluminum measurement, tissue | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Aluminum measurement, urine | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Aluminum measurement | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy metal screen | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Toxic effect of heavy metal | Causative agent | False | Heavy metal | Inferred relationship | Some | 1 | 
| Heavy metal nephropathy | Causative agent | False | Heavy metal | Inferred relationship | Some | 3 | 
| Heavy metal screen on urine | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy metal screen on gastric fluid | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Nephropathy caused by heavy metals (disorder) | Causative agent | False | Heavy metal | Inferred relationship | Some | 1 | 
| Serum aluminum measurement (procedure) | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Plasma aluminum measurement | Has measured component | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy metal screen, Reinsch method | Component | True | Heavy metal | Inferred relationship | Some | 1 | 
| Heavy metals measurement | Component | True | Heavy metal | Inferred relationship | Some | 1 | 
| Heavy metal measurement, quantitative | Component | True | Heavy metal | Inferred relationship | Some | 1 | 
| Strontium measurement | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Uranium measurement | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Evaluation of aluminum stores | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Plutonium measurement | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy metal screen on blood | Component | True | Heavy metal | Inferred relationship | Some | 1 | 
| Heavy metal screen, qualitative | Component | True | Heavy metal | Inferred relationship | Some | 1 | 
| Aluminum measurement, blood | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Thallium poisoning | Causative agent | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy metal screen on bile | Component | True | Heavy metal | Inferred relationship | Some | 1 | 
| Aluminum measurement, tissue | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Aluminum measurement, urine | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Aluminum measurement | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy metal screen | Component | True | Heavy metal | Inferred relationship | Some | 1 | 
| Heavy metal screen on urine | Component | True | Heavy metal | Inferred relationship | Some | 2 | 
| Heavy metal screen on gastric fluid | Component | True | Heavy metal | Inferred relationship | Some | 2 | 
| Serum aluminum measurement (procedure) | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Plasma aluminum measurement | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Tungsten measurement (procedure) | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Selenium poisoning | Causative agent | False | Heavy metal | Inferred relationship | Some |  | 
| Platinum measurement | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Acute selenium poisoning | Causative agent | False | Heavy metal | Inferred relationship | Some |  | 
| Chronic selenium poisoning | Causative agent | False | Heavy metal | Inferred relationship | Some |  | 
| Chromium measurement, urine | Component | False | Heavy metal | Inferred relationship | Some |  | 
| Curium (substance) | Is a | True | Heavy metal | Inferred relationship | Some |  | 
| Accidental poisoning by thallium | Causative agent | False | Heavy metal | Inferred relationship | Some |  | 
| Thallium AND/OR thallium compound | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Cadmium AND/OR cadmium compound | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| mercure et/ou composé de mercure | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Lead AND/OR lead compound | Is a | False | Heavy metal | Inferred relationship | Some |  | 
| Heavy-metal-induced tubulointerstitial nephritis (disorder) | Causative agent | False | Heavy metal | Inferred relationship | Some | 3 | 
| Measurement of heavy metal in tissue specimen (procedure) | Component | True | Heavy metal | Inferred relationship | Some | 2 | 
| Measurement of heavy metal in blood specimen (procedure) | Component | True | Heavy metal | Inferred relationship | Some | 2 | 
| Measurement of heavy metal in urine specimen (procedure) | Component | True | Heavy metal | Inferred relationship | Some | 2 | 
| Measurement of heavy metal in 24 hour urine specimen by screening method (procedure) | Component | True | Heavy metal | Inferred relationship | Some | 2 | 
| Dementia caused by heavy metal exposure | Causative agent | True | Heavy metal | Inferred relationship | Some | 1 |