{"id":"10c18dee-13af-5743-840b-1dc43eab38c9","stable_key":"5102beb6-9f61-500e-af10-9ac63649e0b7:k-potato-urinary-recovery","predicate":"differs_from_food_in","statement":"Urinary potassium recovery was greater after potato intake than after the supplement despite no detected source difference in serum exposure.","claim_class":"observational","status":"source_derived_draft","evidence_grade":"ungraded","direction":"context_dependent","is_public":true,"mechanism_event_id":"a432275e-11ac-50a9-89e2-d9277d44ab8e","mechanism_event_label":"Urinary recovery and absorption are related but distinct measurements.","subject":{"id":"7e4ef8bd-e840-515a-8bfe-6fdee0ef5b8c","slug":"potassium-gluconate","display_name":"Potassium gluconate","entity_type_key":"chemical_species"},"object":{"id":"7f78edef-2ff6-5c96-b8ff-dc3f48fb80cd","slug":"urinary-potassium-excretion","display_name":"Urinary potassium excretion","entity_type_key":"cellular_process"},"evidence_count":1,"mechanism_event":{"id":"a432275e-11ac-50a9-89e2-d9277d44ab8e","stable_key":"5102beb6-9f61-500e-af10-9ac63649e0b7:k-potato-urinary-recovery-event","event_type":"observed_intervention","label":"Urinary recovery and absorption are related but distinct measurements.","description":"Urinary potassium recovery was greater after potato intake than after the supplement despite no detected source difference in serum exposure.","status":"provisional","compartment":null,"participants":[{"entity":{"id":"5dd31e52-f51e-51f3-880e-240abcc0ab1d","slug":"potassium-ion","display_name":"Potassium ion","entity_type_key":"ion"},"role":"measured_ion","stoichiometry":null,"state_label":"","sequence_order":0,"notes":""},{"entity":{"id":"91de6063-d0ae-5f4c-9935-75bcec18c7b5","slug":"serum-potassium-concentration","display_name":"Serum or plasma potassium concentration","entity_type_key":"cellular_process"},"role":"parallel_endpoint","stoichiometry":null,"state_label":"","sequence_order":1,"notes":""},{"entity":{"id":"7e4ef8bd-e840-515a-8bfe-6fdee0ef5b8c","slug":"potassium-gluconate","display_name":"Potassium gluconate","entity_type_key":"chemical_species"},"role":"subject","stoichiometry":null,"state_label":"","sequence_order":2,"notes":""},{"entity":{"id":"7f78edef-2ff6-5c96-b8ff-dc3f48fb80cd","slug":"urinary-potassium-excretion","display_name":"Urinary potassium excretion","entity_type_key":"cellular_process"},"role":"target","stoichiometry":null,"state_label":"","sequence_order":3,"notes":""}]},"contexts":[{"dimension":"experimental_model","value_text":"Same feeding study.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"limitations","value_text":"Urinary potassium alone is not an exact measure of food intake or intracellular stores.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"nutrient_topic","value_text":"Potassium research collection; topical membership is not evidence of a direct dietary effect.","comparator":null,"unit":null,"notes":"","entity":{"slug":"potassium","display_name":"Potassium","entity_type_key":"nutrient_element"}},{"dimension":"organism","value_text":"Homo sapiens","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"plain_language","value_text":"Urinary recovery and absorption are related but distinct measurements.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"primary_references","value_text":"[k-macdonald2016] Bioavailability of potassium from potatoes and potassium gluconate: a randomized dose response trial (2016). https://pubmed.ncbi.nlm.nih.gov/27413123/ DOI: 10.3945/ajcn.115.127225","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"tissue_or_cell_type","value_text":"Urine and serum","comparator":null,"unit":null,"notes":"","entity":null}],"evidence":[{"id":"b3bcdcb2-f3b7-52d0-bbe1-ed9084464a4e","evidence_kind":"source_excerpt","locator":"Lines 1464-1473","start_line":1464,"end_line":1473,"excerpt":"### k-potato-urinary-recovery\nUrinary potassium recovery was greater after potato intake than after the supplement despite no detected source difference in serum exposure.\nCondition category: normal\nnutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect.\nplain_language: Urinary recovery and absorption are related but distinct measurements.\norganism: Homo sapiens\ntissue_or_cell_type: Urine and serum\nexperimental_model: Same feeding study.\nlimitations: Urinary potassium alone is not an exact measure of food intake or intracellular stores.\n[k-macdonald2016] Bioavailability of potassium from potatoes and potassium gluconate: a randomized dose response trial (2016). https://pubmed.ncbi.nlm.nih.gov/27413123/ DOI: 10.3945/ajcn.115.127225","model_system":"Same feeding study.","directness":"author_interpretation","verification_status":"source_derived_draft","notes":"Exact curation-document quotation, not publisher quotation. Study references: [k-macdonald2016] Bioavailability of potassium from potatoes and potassium gluconate: a randomized dose response trial (2016). https://pubmed.ncbi.nlm.nih.gov/27413123/ DOI: 10.3945/ajcn.115.127225","relationship":"supports","weight":1.0,"link_notes":"","source":{"id":"241226ee-6b7d-5cc7-9781-e6beb8ee1982","stable_key":"import-5102beb6-9f61-500e-af10-9ac63649e0b7","title":"Potassium: cross-nutrient mechanisms and deficiency (2026-09-17)","document_type":"imported_text","citation_label":"AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text.","file_path":"","sha256":"a8f89f8d84b48c0f93048dfc45f7f57a67dd9a7249968a096a14aeb03d8b7a52","revision_id":"de4ec6f4-58a1-537b-8169-97b783898df1","review_status":"unverified_draft","notes":""}}],"relations":[],"conflicts":[],"corrections":[],"research":null}