The phrase "as a first examination" is correct and usable in written English.
It can be used when referring to an initial assessment or review of a subject or situation.
Example: "As a first examination of the data, we found several interesting trends that warrant further investigation."
Alternatives: "as an initial assessment" or "as a preliminary review".
Most universities use the CSAT as a first examination and administer their own in-house test as a second examination.
Here, we utilized mouse spinal cord sections as a first examination sample because the distribution pattern of the cholinergic neuron in the spinal cord is simple and well described [ 37].
As a first examination, we checked for GO annotation keyword enrichment in each set (Ashburner et al., 2000) Statistical analysis of the left set, based on literature gene associations (Jenssen et al., 2001), indicates enrichment for keywords of 'recombination' (corrected P-value of 9.86e-33) and 'sporulation' (corrected P-value of 3.22e-148).
In the present study, we did not examine the effect of fixative type on FISH results, because, for gastric cancer, IHC testing is recommended as a first examination for HER2, followed by confirmative testing by FISH for IHC score 2+ specimens.
Those who consented were registered as participants and underwent a second examination.
The exact time of the patient's arrival was recorded in his/her medical records upon their arrival, as was the first examination by the physician.
In polytrauma patients, the use of CEUS was proposed as a first level examination, after the FAST, in order to reduce the number of CT examinations [1, 4, 6].
In the low-energy trauma and in hemodynamically stable patients, the US can be used as a first-level examination; when US detect intra-abdominal fluid CT examination is need.
Two different clinical situations relating to the role of CT as the first examination in a line of examinations were addressed: (1) What were the sensitivity, specificity and positive predictive value if CT was used to identify patients with lung cancer?
We found the less costly and therefore most efficient diagnostic approach overall to be a strategy, starting with CTA as the first examination, followed by DSA if coiling is not deemed feasible.
In general, the cost-effectiveness of ultrasound could justify its use as a first-line examination technique [100, 109].
