An Isotope Test of Calcium Absorption
نویسندگان
چکیده
منابع مشابه
Zinc and calcium apparent absorption from an infant cereal: a stable isotope study in healthy infants.
Fractional apparent absorption of Zn and Ca from a wheat-milk-based infant cereal was studied in six healthy infants (18-30 weeks old). Mineral absorption was measured by a stable-isotope technique based on faecal excretion of the isotopes. Each test meal (40 g cereal) was extrinsically labelled with 70Zn and 42Ca before intake. All faecal material passed during the 21 d following intake of the...
متن کاملA New Oral Isotopic Test of Calcium Absorption.
Abnormal absorption of dietary calcium has been recognized for many years in intestinal diseases, sarcoidosis (1), idiopathic hypercalciuria (2), hypoparathyroidism (3, 4), hyperparathyroidism (5-7), and more recently in calcinosis universalis (8). Understanding of calcium absorption in the past has been limited by the requirement of 18 to 20 days of metabolic balance procedures; interpretation...
متن کاملA New Oral Isotopic Test of Calcium Absorption *
Abnormal absorption of dietary calcium has been recognized for many years in intestinal diseases, sarcoidosis (1), idiopathic hypercalciuria (2), hypoparathyroidism (3, 4), hyperparathyroidism (5-7), and more recently in calcinosis universalis (8). Understanding of calcium absorption in the past has been limited by the requirement of 18 to 20 days of metabolic balance procedures; interpretation...
متن کاملSimple test of intestinal calcium absorption measured by stable strontium.
A clinical test of intestinal calcium absorption has been developed using non-radioactive stable strontium as a calcium tracer. In nine elderly subjects there was a close correlation between the fractional absorption of strontium and radioactive calcium (45Ca) during a five hour period after the simultaneous oral administration of the two tracers. Comparable precision was achieved with each tra...
متن کاملIntestinal strontium absorption: from bioavailability to validation of a simple test representative for intestinal calcium absorption.
Calcium absorption tests have rarely been validated for being representative for absolute bioavailability (true absorption) or for intraindividual variation. Therefore, we investigated the reproducibility of the absolute bioavailability of strontium chloride, a marker for intestinal calcium absorption, in healthy male volunteers (n = 8) by measuring the area under the plasma strontium concentra...
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ژورنال
عنوان ژورنال: BMJ
سال: 1961
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.2.5266.1539