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Biochemical problems caused by some cryoglobulins.

J Etienne, H Sarmini, J P Borgard

Biomedicine / [Publiee Pour L'A.A.I.C.I.G.]

|June 1, 1978

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Unsuspected cryoglobulinaemia can lead to undetected dysglobulinaemia by causing falsely normal serum protein results. Laboratory professionals should investigate cryoglobulins if electrophoresis shows gamma globulin abnormalities, even without clinical signs.

Area of Science:

Clinical Chemistry
Immunology

Background:

Cryoglobulinaemia, characterized by abnormal proteins precipitating at low temperatures, can interfere with laboratory diagnostics.
Failure to detect cryoglobulins may lead to misinterpretation of serum protein electrophoresis results.

Purpose of the Study:

To highlight the potential for cryoglobulinaemia to cause undetected dysglobulinaemia.
To emphasize the importance of considering cryoglobulins in specific laboratory findings.

Main Methods:

Review of cases where cryoglobulinaemia affected serum protein analysis.
Discussion of the impact of cryoglobulin precipitation on centrifugation and protein quantification.
Exploration of diagnostic strategies for cryoglobulinaemia.

Main Results:

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Cryoglobulins precipitating during sample processing can be erroneously removed, leading to falsely normal total protein levels.
Massive cryoglobulinaemia can mask underlying dysglobulinaemia, especially when only total protein is measured.
Electrophoresis may reveal subtle gamma globulin abnormalities suggestive of cryoglobulinaemia.

Conclusions:

Undetected cryoglobulinaemia poses a risk for misdiagnosing dysglobulinaemia.
Investigating cryoglobulins, particularly when electrophoresis shows gamma globulin anomalies, is crucial even without clinical suspicion.
Awareness and appropriate laboratory methods are essential for accurate protein analysis in suspected cryoglobulinaemia.