| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Measurement of heavy metal in urine specimen | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine methamphetamine measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine paraquat measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Chloral hydrate measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| D-xylose, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine trace metal measurement | Is a | False | Urine substance measurement | Inferred relationship | Some |  | 
| Urine 18-hydroxycortisol level | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine 3-methoxytyramine/creatinine ratio | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of phenolphthalein in urine specimen | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Drugs of abuse urine screening test | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine free iodine measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine oligosaccharide measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine ketamine measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| 5-Hydroxyindoleacetic acid measurement, quantitative, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Potassium measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine xanthine level | Is a | False | Urine substance measurement | Inferred relationship | Some |  | 
| Urine cortisol level | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of doxylamine in urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine phenothiazine screening test | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of methylphenidate in urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine pentaporphyrin concentration measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine N-telopeptide cross links measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine sulfite measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Calculation of ratio of maximum rate of tubular reabsorption of phosphate to glomerular filtration rate | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine DNPH measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Quantitative measurement of 11-deoxycortisol in urine specimen | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Porphobilinogen measurement, qualitative, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urinalysis, sediment examination, centrifuged | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of amino acid in urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Citrate excretion measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Neonatal drug screen on urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of pyrilamine in urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine danthron measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine cannabinoid measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Screening for antihistamine in urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine uroporphyrin measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of hippuric acid in urine specimen | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine coproporphyrin measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of homovanillic acid in urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| N-methylimidazoleacetic acid measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Electrolytes measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Osmolality urine / serum ratio measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urobilinogen measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Glucose measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine vitamin B1 measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine D-Lysergic acid level | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Qualitative measurement of nicotine in urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine sulfate measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| 24 hour urine citrate output measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine amphetamine screening test | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Calcium excretion, 2-hour collection, fasting, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Porphyrin, quantitative measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine methylmalonic acid level | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine protein test | Is a | False | Urine substance measurement | Inferred relationship | Some |  | 
| Urine glutamate measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine salicylate level | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Phosphorus measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of vanillylmandelic acid in urine specimen | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine pH test | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine cortisol precursor level | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine phencyclidine level | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Paracetamol measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of urine testosterone titre | Is a | False | Urine substance measurement | Inferred relationship | Some |  | 
| Urine 5-aminolevulinic acid measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Chromium measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of sulfonylurea in urine specimen by screening method | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Rapid urine screening test, bioluminescence | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine cyclizine level | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine bisacodyl metabolites level | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Boric acid measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine growth hormone level | Is a | False | Urine substance measurement | Inferred relationship | Some |  | 
| Quantitative measurement of histamine in urine specimen | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Quantitative measurement of mass concentration of fluoride in urine specimen | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine free testosterone measurement | Is a | False | Urine substance measurement | Inferred relationship | Some |  | 
| Phenol measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| 24 hour urine 5-hydroxyindole acetic acid output measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Bromides measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine antimony measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of chlorpheniramine in urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine sex hormone measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Bilirubin measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine methylenedioxyamphetamine measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of tricyclic antidepressant in urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine chorionic gonadotrophin measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| 24 hour urine porphyrin output | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Cocaine measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Selenium measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Porphobilinogen measurement, quantitative, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Meprobamate measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Galactose measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Creatinine measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine benzoylecgonine quantitative measurement using gas chromatography mass spectrometry | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Measurement of carisoprodol in urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine chromatography | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| 17-Ketosteroids measurement, fractionation, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Fractional excretion of calcium measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine - bile chemistry measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Creatine measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Urine ferrous chloride measurement | Is a | True | Urine substance measurement | Inferred relationship | Some |  | 
| Oestrogen measurement, urine | Is a | False | Urine substance measurement | Inferred relationship | Some |  | 
| Aldosterone measurement, urine | Is a | True | Urine substance measurement | Inferred relationship | Some |  |