Laboratory Services

Arsenic, Blood

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Updated Test Information:

Test Description
Arsenic, Blood

As (Arsenic); Arsenic (As)

Test ID
General Information

Useful for:

  • Detection of acute or very recent arsenic exposure

  • Monitoring the effectiveness of therapy

  • This test is not useful for evaluation of chronic arsenic exposure

  • The preferred method of screening for arsenic exposure is measurement of urinary arsenic concentration. Order either ASFR / Arsenic Fractionation, 24 hour, Urine or ASFRU / Arsenic Fractionation, Random, Urine.

Specimen Type

Whole Blood

Specimen Requirements

Royal Blue EDTA

Specimen Collection / Processing Instructions

  • Patient Preparation: High concentrations of gadolinium and iodine are known to interfere with most metals tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours

  • See Trace Metals Analysis Specimen Collection and Transport for complete instructions

  • Send specimen in original collection tube

  • Additional Information: If ordering the trace element blood collection tube from BD, order catalog #368381.

Minimum Sample Volume

0.3 mL


  • Refrigerated (preferred): 28 days

  • Ambient: 28 days

  • Frozen: 28 days


Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Estimated TAT

1-3 days

Testing Schedule



14 days

CPT Code(s)


Reference Range

< 13 ng/mL

Performing Lab


LOINC Code(s)


Additional Information