Table 3.

NSQAP Proficiency Testing (PT) Programs as of December 2014.

PT Program (Number of Participants)	Analytes Included in Each Program
Amino Acids (444)	Arginine, Leucine, Phenylalanine, Tyrosine, Valine, Citrulline, Succinylacetone, Methionine
Acylcarnitines (315)	C0(L), C3, C3DC, C4, C4OH, C5, C5:1, C5DC, C5OH, C6, C8, C10, C10:1, C10:2, C14, C14:1, C16, C16OH, C18, C18:1, C18OH
Hormones (376)	Thyroid-Stimulating Hormone, Thyroxine, Total Galactose, 17- α-Hydroxyprogesterone
Immunoreactive Trypsinogen (211)	Immunoreactive Trypsinogen
CF DNA (64)	71 Mutations
Hemoglobins* (73)	Varied
UDOT* (65)	Varied
Galactose-1-phosphate Uridyltransferase (125)	GALT
Biotinidase Deficiency (199)	Biotinidase
Second Tier CAH (17)	17-Hydroxyprogesterone, 4-Androstenedione, Cortisol, 11-Deoxycortisol, 21-Deoxycortisol
Lysosomal Storage Disorders* (7)	Pompe, Krabbe
SCID (40)	T-cell Excision Circles (TREC)
Toxoplasmosis gondii (10)	Anti-Toxoplasma gondii Immunoglobulins M and G
HIV (28)	Anti-HIV-1 Antibodies

^*Limited enrollment