Table 1.

The patient’s laboratory results during three hospital visits

Variable	Reference range	2 Months before	1 Week before	During presentation
Lactate dehydrogenase (U/L)	313–618	2786.3
D-dimer (μg/mL)	0.00–0.50	0.84
Haptoglobin (mg/dL)	30–200	<20		117
Parvovirus B19 IgG (IV)	≤0.90	3.78
Parvovirus PCR	ND	ND
Thyroid-stimulating hormone (ulU/mL)	0.47–4.68	<0.01		<0.01
Free T4 (ng/dL)	0.78–2.19	0.45		1.92
Total T3 (ng/mL)	0.97–1.69	0.39
Free T3 (pg/mL)	2.77–5.27	1.32		1.29
HIV 1 & 2 antigen and antibody	Neg	Neg
Prolactin (ng/mL)	2.1–17.7	26.2
Total testosterone (ng/dL)	300–720	<3
Free testosterone (pg/mL)	47–244	<1
Luteinizing hormone (IU/L)	1.7–8.6	0.7
Insulin-like growth factor 1 (ng/mL)	51–209	44
Adrenocorticotropic hormone (pg/mL)	7.2–63.3	5.2
Cryptococcal antigen	Neg		Neg
Fungitell beta–D glucan	Neg		Neg
Coccidioides Ab IgG by ELISA (IV)	≤0.9		1.7
Coccidioides Ab IgM by ELISA (IV)	≤0.9		0.0
Typhus fever Ab, IgG	<1:64		<1:64
Typhus fever Ab, IgM	<1:64		<1:64
Babesia species by PCR	ND		ND
Histoplasma galactomannan antigen	ND		ND
Myeloperoxidase Ab (AU/mL)	0–19			0
Proteinase 3 Ab (AU/mL)	0–19			0
SSB–La ENA IgG Ab (AU/mL)	0–40			0
SSA 60 (Ro) (ENA) Ab, IgG (AU/mL)	0–40			0
SSA 52 (Ro) (ENA) Ab (AU/mL)	0–40			1
Cryoglobulin typing and quant IgG	Neg 72 h			Neg 72 h
Double-strand DNA Ab (IU)	≤25.000			0.565
Smith Ab (AU/mL)	0–40			0
Histone Ab IgG (U)	0.0–0.9			0.3

Ab indicates antibody; ELISA, enzyme-linked immunosorbent assay; ENA, extractable nuclear antigen; ND, not detected; Neg, negative; PCR, polymerase chain reaction; quant, quantitative.