108
LARSENetal.
TABLE IV. BASELINE SERUM TSH CONCENTRATIONS AND RESPONSE
TO 500 pg THYROTROPIN RELEASING HORMONE(TRH) IN CONTROL
MARSHALLESE SUBJECTS
Mean + SD
pU/ml
Basal TSH
Mean + SD
2.0 + 0,73
Range
0.5 - 3.0
TSH 20 min after TRH
11.5 +£4.5
Range
4.7 — 20
TABLE V. CRITERIA FOR THE DIAGNOSIS OF BIOCHEMICAL THYROID
DYSFUNCTION
1.
Basal plasma TSH
> SpU/ml
on two occasions
> 3 yU/ml
.
on two occasions
or
2. a. Basal plasma TSH
b. Plasma TSH after TRH
> 22 pU/ml
TABLE VI. FREQUENCYOF AT LEAST A SINGLE ELEVATED BASAL
SERUM TSH CONCENTRATION IN THE MARSHALLESE POPULATION
Number
Number
9,
115
1]
10
Utirik exposed
(Thyroid dose < 95 rads)
99
12
12
Rongelap and Ailingnae exposed
(Subjects without surgery
and excluding Nos 3 & 5)
43
1]
26
tested
Control unexposed
> 3.0 nU/ml