Preparation for subject testing
(What to discuss with subject prior to testing)
Subjects who do not adhere to the pre-testing protocols
Failure to adhere to the pre-testing protocols described on page 11 could alter the way the body interacts with
the electrical signal of the BIA. This could alter the body's resistance and reactance, which would result in
altered body composition estimates produced by the software. If an individual is unable to adhere to the pre-
testing protocols, they should be measured as consistently as possible from test to test. If they always do the
same things before being tested, they should have the same effects on the body's electrical properties. As a
result, while all of the estimated results would be offset from their actual values, the amount of offset should be
consistent. This means that you would still be able to track upward and downward trends in their body
composition.
Pregnancy
The FDA recommends against BIA testing on pregnant women because any possible effects on
the fetus are still unknown by the FDA at this time. In addition, BIA testing would not be able to distinguish
between the mother, fetus and amniotic fluids.
Implanted electronic devices
Testing should be avoided on a subject with implanted electronic devices such as pacemakers or cardiac
defibrillator (ICD’s). BIA Analyzers introduce a small amount of alternating (AC) current into the body that
may interfere with such devices.
Metal surgical implants
Test results may not be accurate on subjects with surgically implanted metals such as pins,
rods, or joint replacements. If these metals are present on only one side of the body, use the other side when
testing.
Amputated limbs
BIA testing on subjects with amputated limbs may be performed if amputation is on one
side of the body - use the other side for testing. The prediction equations used by the BC software assume that
the person has not had either an arm or leg amputated. Expect the possibility the data cannot be accurately
analyzed using BC software.
Diagnostics/treatments
BIA testing is not intended to diagnose a disease or treat a medical condition.
Risk of electrical shock
Subject
will not feel an “electrical shock” when tested, the amount of current is very small.
RJL Analyzers have isolation transformers that prevent any harmful current from being exposed to the subject
while being tested.
Testing - how long it takes
Depending on the proficiency of the technician, the actual test can take less than a minute. BIA analysis can be
performed and results printed out afterwards if technician has access to computer and printer.
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