| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Urine drug level NOS | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine bisacodyl level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine monoacetyl morphine level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine salicylate level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine danthron measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine dextropropoxyphene level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine diamorphine level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine D-Lysergic acid level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine methylamphetamine level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine phencyclidine level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine rhein level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine flunitrazepam level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine diazepam level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine methaqualone level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine morphine metabolite level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine nitrazepam level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine temazepam level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine oxazepam level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine ethambutol level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine rifampicin level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Acetaminophen measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine amphetamine measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine ketamine measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine pholcodine measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine isoniazid measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of doxylamine in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of phenobarbital in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of desipramine in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Qualitative measurement of nicotine in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of hydromorphone in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of oxycodone in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of methylphenidate in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of hydrocodone in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of chlorpheniramine in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of carisoprodol in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of doxepin in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of nortriptyline in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of tricyclic antidepressant in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Porphyrins, quantitation and fractionation, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Manganese measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Potassium measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Bromides measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine paraprotein measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Magnesium measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Sodium measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Dopamine measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine ethanol measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine 17 ketogenic steroid measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine collagen measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| 24 hour urine porphyrin output | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine uroporphyrin measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of urine testosterone titer | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine benzodiazepine measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine cocaine measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| 17-Ketosteroids measurement, fractionation, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| 24 hour urine delta aminolaevulinic acid output | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine cannabinoid measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine lithium measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine opiate measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine coproporphyrin measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine isoleucine measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Phenol measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine cortisol level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine heptaporphyrin concentration measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine pentaporphyrin concentration measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of diphenhydramine in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of tramadol in urine specimen | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine light chain measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Porphyrins, qualitative measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Porphyrin, quantitative measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of pyrilamine in urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine glutamine measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine growth hormone level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine ephedrine level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine cyclizine level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Meprobamate measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Iron measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Estrogen measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of phenolphthalein in urine specimen | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine vitamin B2 measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine hexaporphyrin measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Zinc measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Aldosterone measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine vitamin C measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Measurement of urine delta aminolevulinic acid | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Copper measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Phosphorus measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Porphobilinogen measurement, quantitative, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine glycine measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine chorionic gonadotrophin measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Chromium measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Porphobilinogen measurement, qualitative, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| 24 hour urine nickel output | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Selenium measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Ethchlorvynol measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine cortisol precursor level | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine drug screening | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Chloral hydrate measurement, urine | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine pseudoephedrine measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  | 
| Urine bile salt measurement | Is a | False | Urine drug measurement | Inferred relationship | Existential restriction modifier |  |