Quiz
1. What is Osmolality?
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2. What is Osmometry?
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3. What is an Osmometer?
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4. What is the Osmolal gap?
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5. What is Freezing-Point Depression?
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6. How can athletes benefit from using osmometers?
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7. How can clinicians benefit from using osmometers?
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8. How can osmometers help the scientists and researchers?
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9. How can law enforcement officials benefit from using the osmometer?
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10. What are the main reasons for performing the following types of
osmolality tests: Urine, Stool, and Plasma.
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1. What is Osmolality?
Answer: Osmolality is a measure of the total number of particles in
a solution. It is also affected by the amount of solvent in the system.
(For more information, see Osmolality section)
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2. What is Osmometry?
Answer: Osmometry is a measurement of osmolality by the freezing
point method. It is an important diagnostic method used in a broad range
of clinical applications not currently available by any other means. (For
more information, see Using Osmometry article in the General
Information section)
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3. What is an Osmometer?
Answer: Osmometers can be used to measure the osmolality
of a sample. The freezing point depression method is the most commonly
used method in laboratories around the world. Because this technology
is very sensitive and accurate, users find that it provides a rapid means
of determining sample osmolality. (For more information, see Osmometry
article in the General Information
section)
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4. What is the Osmolal gap?
Answer: Osmolal gap is defined as the difference between the actual,
measured osmolality, and that calculated from the molal concentrations
of all major solutes present is serum. (For more information, see Osmometry
article in the General Information
section)
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5. What is Freezing-Point Depression?
Answer: Freezing Point Depression accurately measures the presence
of all osmotically active substances. (For more information, see Freezing
Point Osmolality article in the General
Information section)
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6. How can athletes benefit from
using osmometers?
Answer: In sports medicine, osmolality is a general-purpose test
that can be applied to a vast number of performance enhancement situations.
Monitoring hydration status of athletes in weight-class and endurance
sports is a challenge to which the osmometer is particularly well suited.
(For more information, see Sports
Medicine application)
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7. How can clinicians benefit from
using osmometers?
Answer: Clinicians can make more timely diagnoses and institute
more appropriate patient care, which can translate to decreased health
care costs for medical institutions of any size, in any setting. (For
more information, see Clinical
application)
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8. How can osmometers help the scientists
and researchers?
Answer: Pharmaceutical manufacturers and biotechnology researchers
can also benefit from routine osmolality testing. Benefits include monitoring
drug development and media manufacture for proper consistency and formulation,
and assuring proper shelf-life and product stability. (For more information,
see Pharmaceutical/Biotechnology
application)
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9. How can law enforcement officials
benefit from using the osmometer?
Answer: Osmolality can be used as an effective and reliable drug-screening
tool. Law enforcement officials can use osmometers in forensics laboratories
and at crime scenes as part of the investigative process.
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10. What are the main reasons for
performing the following types of osmolality tests: Urine, Stool, and
Plasma.
Answers: Urine osmolality provides the best estimate of the kidney’s
concentrating ability.
Measurement of osmolality in
stool is helpful in evaluation of patients with diarrhea.
Plasma Osmolality is critical in rapid screening for
certain toxins. Probably the single most useful application of osmolality
is in the evaluation of patients suspected of having ingested a toxin.
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