Routine: 48 Hours
Urgent: 48 Hours

7 days a week

12 mL urine in a sterile container. 
Stable for 2 hours at room temperature or 24 hours refrigerated.

1 mL urine in a sterile container.
Stable for 2 hours at room temperature or 24 hours refrigerated.

Routine: 30 Minutes
Urgent: 15 Minutes
Extreme Emergency: 15 Minutes

24 hours, 7 days a week.

1 mL blood in a heparinized syringe OR one full GREEN top (sodium or lithium heparin) tube.

0.3 mL blood in a heparinized syringe OR 0.6 mL blood in a pediatric GREEN top (sodium or lithium heparin) tube.

Stability: Whole blood up to 4 hours at room temperature.

Ca
ICA
Ionized Calcium
Post filter

Routine: 2 Hours 
Urgent: 1 Hour

24/7

Negative

6 ml fresh urine.

Negative

Measurement of the body fluid hematocrit using an automated cell counter.

Routine: 90 Minutes
Urgent: 60 Minutes
Extreme emergency: 15 Minutes

24 hours, 7 days

A pleural fluid hematocrit greater than 1% is usually associated with malignancy, pulmonary embolus or chest trauma. A result of greater than 50% of the peripheral blood hematocrit level is associated with a true hemothorax.

None

Serous body fluid (pleural, peritoneal and pericardial) specimens received in an EDTA tube are preferred.
Other sources, containers or anticoagulants are suitable provided the sample is free from clots and/or debris.  
Room temperature. Refrigerate if greater than 2 hours before testing.
1 mL or more preferred.  Minimum volume 0.5 mL.

0.5 mL

Less than 1%

HCT, BF
HCT, Body Fluid
Hematocrit, BF

Preliminary positives are reflexed to Serotonin Release Assay (Heparin Dependent Platelet Antibody), Unfractionated Heparin at ARUP.

Link to ARUP Test Directory (Opens in a new window) for the SRA confirmation reflex test.

Routine: 2 Hours
Urgent: 1 Hour

Batched daily 7 days per week. Please call 503-494-5764 if STAT.

Preliminary Positive, Confirmation Pending

One 2.7 mL Lt Blue Na Citrate tube and one 5 mL Gold SST tube.

One 1.3 mL Lt Blue Na Citrate tube and two pediatric red top tubes.

HIT Ab Negative

Method: Immunoturbidimetric detection of anti-PF4/Heparin (PF4/H) antibodies.

Interferences:
The HIT Ab assay is not affected by hemoglobin up to 500 mg/dL, bilirubin up to 19 mg/dL, triglycerides up to 375 mg/dL, rheumatoid factor up to 100 IU/mL and human anti-mouse antibodies (HAMA) up to 1 microgram/mL.

No dose-response correlation between HIT results and heparin concentrations was shown in manufacturer studies; UFH (n=11) range from 0.04-1.08 IU/mL and LMWH (n=115) range from 0-2.47 IU/mL).

Testing on 40 samples from patients diagnosed with Antiphospholipid Syndrome (APS) showed no HIT Ab positive results indicating that the assay is not affected by APS antibodies.

Heparin Induced Thrombocytopenia Antibody

4 Hours

24 hours, 7 days.

4 mL of blood in a RED top tube. Avoid exposure to light.

Therapeutic Range
Low dose: 0.5 to 1.0 micromoles/L
High dose, 24 hours: Less than or equal to 5.0 micromoles/L
High dose, 48 hours: Less than or equal to 0.5 micromoles/L
High dose, 72 hours: Less than or equal to 0.10 micromoles/L

This assay shows cross reactivity with DAMPA (2,4-Diamino-N10-methylpteroic acid). 
Specimens from patients who have received glucarpidase (carboxypeptidase G2) as a high dose methotrexate rescue therapy should not be tested with the EMIT Methotrexate assay. These specimens have increased serum levels of metabolite (DAMPA) that cross-reacts with the methotrexate antibody used in the assay. 

Methopterin
Mexate
MTX

Transferrin

Routine: 2 Hours
Urgent: 1 Hour

24 hours, 7 days a week.

4 mL blood in a GREEN top, lithium heparin tube.

0.5 mL in a 1.0 mL GREEN top, lithium heparin tube.

Routine: 3 Hours
Urgent: 3 Hours

Monday through Friday, 8:00 am to 5:30 pm.

4 mL blood in a GREEN top, lithium heparin tube.
Plasma samples are stable for 3 days at 2 to 8 degrees C. Samples can be stored for up to 12 months at -20 degrees C (or below).

Less than 449 pg/mL

BNP
BRAIN NATIURETIC PEPTIDE
B-Type Natriuretic Peptide
N Terminal proBNP
NT Pro BNP
NTB
NT-Pro B-Type Natriuretic Peptide
ProBNP

Routine: 1 Hour
Urgent: 1 Hour

24 hours, 7 days a week.

Female: greater than 75 ng/L
Male: greater than 100 ng/L
Unspecified: greater than 75 ng/L

4 mL blood in a GREEN lithium or sodium heparin tube ONLY.

Only Lithium Heparin GREEN top peds tube is OK. RED top peds tube is NOT ACCEPTABLE.

All troponins outside OHSU or in the ambulatory setting will be one-time, random high sensitivity troponin draws.

For OHSU IP and ED patients, random troponins are limited to the following clinical scenarios and populations:
o    Known pericarditis
o    Toxic drug monitoring
o    Known pulmonary embolism
o    Pediatrics
o    Ambulatory

Troponin-I, HS Random
Troponin-I, HS Panel (0,2 Hr)

Enterococcus faecalis
Enterococcus faecium
Listeria monocytogenes
Staphylococcus
Staphylococcus aureus
Staphylococcus epidermidis
Staphylococcus lugdunensis
Streptococcus
Streptococcus agalactiae (Group B)
Streptococcus pneumoniae
Streptococcus pyogenes (Group A)
Acinetobacter calcoaceticus-baumanii complex
Bacteroides fragilis
Enterobacterales
Enterobacter cloacae complex
Escherichia coli
Klebsiella aerogenes
Klebsiella oxytoca
Klebsiella pneumoniae group
Proteus
Salmonella
Serratia marcescens
Haemophilus influenzae
Neisseria meningitidis
Pseudomonas aeruginosa
Stenotrophomonas maltophilia
Candida albicans
Candida auris
Candida glabrata
Candida krusei
Candida parapsilosis
Candida tropicalis
Cryptococcus neoformans/gattii
CTX-M (ESBL resistance)
IMP (carbapenemase resistance)
KPC (carbapenem-resistance gene)
mcr-1 (colistin resistance)
mecA/C (methicillin-resistance gene)
mecA/C and MREJ (MRSA) resistance
NDM (carbapenemase resistance)
OXA-48-like (carbapenemase resistance)
van A/B (vancomycin-resistance gene)
VIM (carbapenemase resistance)

Routine: 2 Hours
Urgent: 2 Hours

Blood culture vials

BCID
Blood Culture Pathogen Panel PCR