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osmolality (Osm)

The concentration of solution expressed in number of solute particles per kilogram of soluent. Normal range: - see serum osmolality & urine osmolality Clinical significance: - see serum osmolality & urine osmolality Methods: 1) Freezing point depression (precision +/- 2 mosm/kg) 2) vapor pressure (less precise)

Related

organum vasculosum lamina terminalis (OVLT) osmolarity osmometry osmoregulation osmostat

Specific

serum osmolality tear osmolality urine osmolality

General

general chemistry test

References

  1. Saunders Manual of Medical Practice, Rakel (ed), WB Saunders, Philadelphia, 1996, pg 1161
  2. Medical Knowledge Self Assessment Program (MKSAP) 11, 15, American College of Physicians, Philadelphia 1998, 2009
  3. Clinical Guide to Laboratory Tests, 3rd ed. Teitz ed., W.B. Saunders, 1995