Sorted By Test Name - Mayo Medical Laboratories

4993
EBF
8274
REPU
60068
> or =16 years: 220-280 mosmol/kg
POTASSIUM
0-15 years: not established
> or =16 years: 0-199 mEq/kg
SODIUM
0-15 years: not established
> or =16 years: 0-159 mEq/kg
Clinical References: 1. Phillips S, Donaldson L, Geisler K, et al: Stool composition in factitial
diarrhea: a 6-year experience with stool analysis. Ann Intern Med 1995;123:97-100 2. Ho J, Moyer TP,
Phillips SF: Chronic diarrhea: the role of magnesium. Mayo Clin Proc 1995;70:1091-1092 3. Fine KD,
Santa Ana CA, Fordtran JS: Diagnosis of magnesium-induced diarrhea. N Engl J Med
1991;324:1012-1017
Electron Microscopy
Clinical Information: Crucial diagnostic information for the study of human disease may be
provided by transmission and scanning electron microscopy. Often information of a confirmatory nature
or of educational value to the clinician and pathologist can be obtained by this procedure. In recent years,
the technology involved in electron microscopy has progressed to the point where methods have become
standardized and the instrumentation routine. The electron microscope is a fundamental tool in medical
diagnostic and cellular pathobiological investigations, because it is at this instrument's level of resolution
that most structural correlations with function and metabolism are visible.
Useful For: Tumor identification Diagnosing medical disorders such as storage diseases and Primary
Ciliary Dyskinesia
Interpretation: The images and case histories are correlated and interpreted by a pathologist who is an
expert in the field of the suspected diagnoses. Representative images are provided upon request.
Reference Values:
An interpretive report will be provided.
Clinical References: Damjanov I: Ultrastructural Pathology of Human Tumors. St. Albens, VT,
Eden Press, Vol. 1, 1979, Vol. 2. 1980
Electrophoresis, Protein, Body Fluid
Reference Values:
Not applicable
Electrophoresis, Protein, Random, Urine
Clinical Information: Urine proteins can be grouped into 5 fractions by protein electrophoresis:
-Albumin -Alpha-1 -Alpha-2 -Beta-globulin -Gamma globulin The urine total protein concentration, the
electrophoretic pattern, and the presence of a monoclonal immunoglobulin light chain may be
characteristic of monoclonal gammopathies such as multiple myeloma, primary systemic amyloidosis,
and light-chain deposition disease.
Useful For: Identifying patients with a monoclonal M-spike
Interpretation: A characteristic monoclonal band (M-spike) is often found in the urine of patients with
multiple myeloma (MM). The initial identification of an M-spike or an area of restricted migration should
be followed by MPSU/8823 Monoclonal Protein Study, Urine, which includes immunofixation
electrophoresis to identify the immunoglobulin heavy chain and/or light chain. Immunoglobulin heavy
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