"Carnitine" is an alternative way to say total carnitines which = free carnitine + acylcarnitines, or stated another way, unesterified + esterified carnitine.
Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
system
Amnio fld = Amniotic fluid
scale
Qn = Quantitative: The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256
method
Additional Names
short name
AF; Amn; Amn fl; Amnio; Amniotic flu; Amniotic fluid; Carnitine.total; Chemistry; Level; Mass concentration; Point in time; QNT; Quan; Quant; Quantitative; Random