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Urine Calcium (Urine_Calcium)
Principal Investigators
Research Area:
Bone and calcium physiology
Species Studied
Scientific Name: Homo sapiens Species: Human

To determine the level of calcium as measured during bed rest. This was not a hypothesis driven study.

Twenty-four hour urine pools were collected and aliquoted for determination of calcium/bone status for each subject. The subject’s urine was collected for each 24 hour period. Three 10ml aliquots were taken from each 24 hour collection and frozen at -80C. The urine calcium was then analyzed using Flame Atomic Absorption Spectrophotometry.

Projected results are a possible increase in calcium levels over a 6 day period for each bed rest subject. This experiment has concluded in ground-based studies sponsored by the National Aeronautics and Space Administration's Human Adaptation and Countermeasures Division. This experiment was conducted during the Lunar Analog Feasibility Study. LSDA does not expect to receive results from this study.


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Data Information
Data Availability
Archive is complete. No data sets are available for this experiment. Please Contact LSDA if you know of available data for this investigation.

24 hour urine

Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
LAFS 04/13/2008 12/19/2008 250 days

Additional Information
Managing NASA Center
Johnson Space Center (JSC)
Responsible NASA Representative
Johnson Space Center LSDA Office
Project Manager: Pamela A. Bieri
Institutional Support
National Aeronautics and Space Administration (NASA)