{"id":"https://openalex.org/W1566367136","doi":"https://doi.org/10.1016/0002-9378(68)90302-5","title":"A gas-liquid chromatographic method for the rapid estimation of pregnanediol and allopregnanediol in nonpregnancy urine","display_name":"A gas-liquid chromatographic method for the rapid estimation of pregnanediol and allopregnanediol in nonpregnancy urine","publication_year":1968,"publication_date":"1968-07-01","ids":{"openalex":"https://openalex.org/W1566367136","doi":"https://doi.org/10.1016/0002-9378(68)90302-5","mag":"1566367136"},"language":"en","primary_location":{"id":"doi:10.1016/0002-9378(68)90302-5","doi":"https://doi.org/10.1016/0002-9378(68)90302-5","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0002-9378(68)90302-5","pdf_url":null,"source":{"id":"https://openalex.org/S122347013","display_name":"American Journal of Obstetrics and Gynecology","issn_l":"0002-9378","issn":["0002-9378","1085-8709","1097-6868"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","doyens","jufo-3","ki-jl-3","medline","norway-2","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American Journal of Obstetrics and Gynecology","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"J. Chamberlain","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I2802369498","display_name":"Charing Cross Hospital","ror":"https://ror.org/02gcp3110","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I153355300","https://openalex.org/I2802369498"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"J. Chamberlain","raw_affiliation_strings":["Hayward Laboratories, Department of Obstetrics and Gynaecology, Charing Cross Hospital Medical School, London, England"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Hayward Laboratories, Department of Obstetrics and Gynaecology, Charing Cross Hospital Medical School, London, England","institution_ids":["https://openalex.org/I2802369498"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5111900418","display_name":"S.F. Contractor","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I2802369498","display_name":"Charing Cross Hospital","ror":"https://ror.org/02gcp3110","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I153355300","https://openalex.org/I2802369498"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"S.F. Contractor","raw_affiliation_strings":["Hayward Laboratories, Department of Obstetrics and Gynaecology, Charing Cross Hospital Medical School, London, England"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Hayward Laboratories, Department of Obstetrics and Gynaecology, Charing Cross Hospital Medical School, London, England","institution_ids":["https://openalex.org/I2802369498"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I2802369498"],"apc_list":{"value":5410,"currency":"USD","value_usd":5410},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":33,"citation_normalized_percentile":{"value":0.08239883,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"101","issue":"5","first_page":"649","last_page":"657"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10390","display_name":"Ovarian function and disorders","score":0.5342000126838684,"subfield":{"id":"https://openalex.org/subfields/2743","display_name":"Reproductive Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10390","display_name":"Ovarian function and disorders","score":0.5342000126838684,"subfield":{"id":"https://openalex.org/subfields/2743","display_name":"Reproductive Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10908","display_name":"Analytical Chemistry and Chromatography","score":0.30489999055862427,"subfield":{"id":"https://openalex.org/subfields/1602","display_name":"Analytical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10756","display_name":"Estrogen and related hormone effects","score":0.05959999933838844,"subfield":{"id":"https://openalex.org/subfields/1310","display_name":"Endocrinology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/pregnanediol","display_name":"pregnanediol","score":1.0},{"id":"https://openalex.org/keywords/urinary-steroid-measurement","display_name":"urinary steroid measurement","score":0.5950000286102295},{"id":"https://openalex.org/keywords/gas-liquid-chromatography","display_name":"gas-liquid chromatography","score":0.800000011920929},{"id":"https://openalex.org/keywords/hydrochloric-acid-hydrolysis","display_name":"hydrochloric acid hydrolysis","score":0.8420000076293945},{"id":"https://openalex.org/keywords/toluene-extraction","display_name":"toluene extraction","score":0.8169999718666077},{"id":"https://openalex.org/keywords/acetylation","display_name":"acetylation","score":0.8970000147819519},{"id":"https://openalex.org/keywords/internal-standard","display_name":"internal standard","score":0.8659999966621399},{"id":"https://openalex.org/keywords/androstenedione","display_name":"androstenedione","score":0.9929999709129333},{"id":"https://openalex.org/keywords/ovarian-function-assessment","display_name":"ovarian function assessment","score":0.6100000143051147}],"concepts":[{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.8464903831481934},{"id":"https://openalex.org/C2776250704","wikidata":"https://www.wikidata.org/wiki/Q906054","display_name":"Pregnanediol","level":3,"score":0.8158837556838989},{"id":"https://openalex.org/C2778562268","wikidata":"https://www.wikidata.org/wiki/Q102769","display_name":"Sodium hydroxide","level":2,"score":0.6789633631706238},{"id":"https://openalex.org/C2780026642","wikidata":"https://www.wikidata.org/wiki/Q40924","display_name":"Urine","level":2,"score":0.6711871027946472},{"id":"https://openalex.org/C2777436746","wikidata":"https://www.wikidata.org/wiki/Q2409","display_name":"Hydrochloric acid","level":2,"score":0.6131815910339355},{"id":"https://openalex.org/C123460561","wikidata":"https://www.wikidata.org/wiki/Q677065","display_name":"Gas chromatography","level":2,"score":0.5712247490882874},{"id":"https://openalex.org/C2778142098","wikidata":"https://www.wikidata.org/wiki/Q15779","display_name":"Toluene","level":2,"score":0.53008633852005},{"id":"https://openalex.org/C4725764","wikidata":"https://www.wikidata.org/wiki/Q844704","display_name":"Extraction (chemistry)","level":2,"score":0.5024495124816895},{"id":"https://openalex.org/C16993767","wikidata":"https://www.wikidata.org/wiki/Q4674072","display_name":"Acid hydrolysis","level":3,"score":0.49276021122932434},{"id":"https://openalex.org/C94412978","wikidata":"https://www.wikidata.org/wiki/Q103135","display_name":"Hydrolysis","level":2,"score":0.4672410786151886},{"id":"https://openalex.org/C537181965","wikidata":"https://www.wikidata.org/wiki/Q658","display_name":"Sodium","level":2,"score":0.465739369392395},{"id":"https://openalex.org/C2778695967","wikidata":"https://www.wikidata.org/wiki/Q44791900","display_name":"Chloride","level":2,"score":0.4223308265209198},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.4141852855682373},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.13868829607963562},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.08814167976379395}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0002-9378(68)90302-5","doi":"https://doi.org/10.1016/0002-9378(68)90302-5","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0002-9378(68)90302-5","pdf_url":null,"source":{"id":"https://openalex.org/S122347013","display_name":"American Journal of Obstetrics and Gynecology","issn_l":"0002-9378","issn":["0002-9378","1085-8709","1097-6868"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","doyens","jufo-3","ki-jl-3","medline","norway-2","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American Journal of Obstetrics and Gynecology","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.6240000128746033,"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":7,"referenced_works":["https://openalex.org/W1975101849","https://openalex.org/W2003689156","https://openalex.org/W2016281957","https://openalex.org/W2038745140","https://openalex.org/W2039091844","https://openalex.org/W2087297424","https://openalex.org/W2093874677"],"related_works":["https://openalex.org/W1966145132","https://openalex.org/W1984489478","https://openalex.org/W1555862520","https://openalex.org/W1993805966","https://openalex.org/W2056533223","https://openalex.org/W2055603305","https://openalex.org/W2473810268","https://openalex.org/W4298230185","https://openalex.org/W2039091844","https://openalex.org/W3201084194"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-09-29T14:09:16.559479","created_date":"2016-06-24T00:00:00"}
