Monoclonal Gammopathy of Undetermined Significance (MGUS) in a Man with Fragile X-associated Tremor/Ataxia Syndrome

Table 2

MGUS laboratory workup of the patient.

	Levels	Reference range
Red cell count	3.82	4.5–5.9 M/MM3	Low
Hemoglobin	11.9	13.5–17.5 GM/DL	Low
Hematocrit	34.7	41–53%	Low
Glucose	358	70–110 mg/dL	High
Hemagobin A1C	8.5	3.9–5.9%	High
Calcium	9.5	8.6–10.5 mg/dL	Normal
Serum protein electrophoresis with immunofixation	1 g/dL IgG kappa monoclonal paraproteinemia
Serum creatinine	1.3 mg/dL	0.6–1.2 mg/dL	Mildly elevated
GFR	55	>60	Low
IgM	17 mg/dL	37 mg/dL–50 mg/dL	Decreased
Free kappa light chain	7.81 mg/dL	0.33–1.92 mg/dL	Elevated
Lambda light chain	1.88 mg/dL	0.57–2.63 mg/dL	Normal
Kappa to lambda light chain ratio	4.15	0.26–1.65	Elevated
Beta-2 microglobulin	3.38 mcg/mL	1.8 mcg/mL	Elevated
Bone survey			No lytic or sclerotic lesions