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Saliva and serum samples were collected from eight healthy volunteers every two hours during a 26-hour period. Melatonin concentrations were measured by radioimmunoassay after chloroform extraction using radioiodinated melatonin as a tracer. Five of the subjects had high serum melatonin levels at night (peak levels higher than 75 pg/ml); in three subjects the highest serum melatonin concentration was 20-40 pg/ml. All subjects had low levels (
Maija-Liisa Laakso, Tarja Porkka-Heiskanen, Aino Alila, Dag Stenberg, Gunnar JohanssonVolume:
9
Year:
1990
Language:
english
Pages:
12
DOI:
10.1111/j.1600-079x.1990.tb00692.x
File:
PDF, 622 KB
english, 1990