U1-RNP Antibody
Test Includes:
Viruses Included in Panel
Organisms Included in Panel
Test Utility
U1-snRNP antibodies, a subset of RNP antibodies, typically appear in both systemic lupus erythematosus (SLE) and mixed connective tissue disease (MCTD, Sharp Syndrome). In MCTD, the presence of U1sn-RNP antibodies is required for diagnosis, whereas they occur in only 30 to 40% of SLE patients. Although the anti-U1-snRNP immune response comprises antibodies against all 3 protein components (70kDa, A, C), 70kDa antibodies may be more specific for MCTD, as they have been reported to occur less frequently in SLE. Several studies have shown that an anti-U1-snRNP response in the absence of 70kDa antibodies is strongly associated with SLE. This test is semi-quantitative.
Urine Drug Screen Profile Includes:
Methodology
Immunoassay, Fluorescent; EliA method
Methodology
Screen Test Name | Assay Type |
|---|---|
ETG
| DRI |
Amphetamine
| DRI |
Barbiturates
| DRI |
Benzodiazepine
| DRI |
Cotinine
| DRI
|
Cocaine
| DRI |
Methadone
| DRI |
Opiate
| DRI |
Oxycodone
| DRI |
THC
| DRI |
Fentanyl
| DRI |
Buprenorphine | CEDIA
|
Individual Test Information Including Methodology & Reference Ranges
Reflex to UTI Criteria
Specimen Collection and Preparation
Collect serum in the following tubes:
Preferred Specimen: One Gold-top SST tube (Minimum serum volume: 1.0 mL)
Also Acceptable: Plain red top (Minimum serum volume: 1.0 mL)
Pour serum into plastic, pour off tube and label with patient identifiers as well as the source of serum (gold top or red top).
Specimen Storage and Stability
Sample should be centrifuged at 3000 rpm for 15 minutes within 1 hour of collection, and serum/plasma separated as soon as possible.
Serum specimens at the following temperatures:
Room temperature (20–26°C): 72 hours
Refrigerated (2–8°C): 1 week
Note: samples are stored at 2-8C for 7 days before disposal
Specimen Rejection
Improper/incomplete labeling
Quantity insufficient (QNS)
Incorrect sample type
Reference Range (Cutoff)
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
|---|---|
Cocaine | 300 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
|---|---|
Benzodiazepine | 200 |
Screen Test Name | Cutoff (ng/mL) |
|---|---|
Buprenorphine | 5 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
|---|---|
Amphetamine | 500 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
|---|---|
Barbiturates | 200 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
|---|---|
ETG | 500 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
|---|---|
ETG | 500 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
|---|---|
EDDP | 100 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
|---|---|
Fentanyl | 1 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
|---|---|
Methadone | 300 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
|---|---|
PCP | 25 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
|---|---|
Opiate | 300 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
|---|---|
Oxycodone | 300 |
Screen Test Name | Cutoff (ng/mL) |
|---|---|
Methamphetamine | 500 |
Screen Test Name | Cutoff (ng/mL) |
|---|---|
THC | 50 |
Screen Test Name | Cutoff (ng/mL) |
|---|---|
ETG | 500 |
Amphetamine | 500 |
Barbiturates | 200 |
Benzodiazepine | 200 |
Cotinine | 500 |
Cocaine | 300 |
Methadone | 300 |
Opiate | 300 |
Oxycodone | 300 |
THC | 50 |
Fentanyl | 1 |
Buprenorphine | 5 |
Reference Range
The assay provides a numerical result in U/mL and interpretative comments based on the numerical result:
<5.0 U/mL= Negative; 5.0-10.0 U/mL = Equivocal; >10.0 U/mL = Positive
A definitive clinical diagnosis should not be based on the results of a single diagnostic method but should only be made by the physician after all clinical and laboratory findings have been evaluated.
It is recommended to repeat equivocal results, after 8-12 weeks.
Parameter | Reference Range |
|---|---|
Glucose | Negative |
Bilirubin | Negative |
Ketones | Negative |
Specific Gravity | 1.005 - 1.030 |
Blood | Negative |
pH | 5.0 - 8.0 |
Protein | Negative |
Urobilinogen | 0.0 - 1.0 mg/dL |
Nitrate | Negative |
Leukocyte Esterase | Negative |
Microscopic Evaluation | |
WBC | Negative |
Parameter | Reference Range |
|---|---|
Microscopic Evaluation | |
WBC | Negative |
RBC | Negative |
Hylaine Casts | Negative |
All other Parameters | Negative |
Parameter | Reference Range |
|---|---|
Glucose | Negative |
Bilirubin | Negative |
Ketones | Negative |
Specific Gravity | 1.005 - 1.030 |
Blood | Negative |
pH | 5.0 - 8.0 |
Protein | Negative |
Urobilinogen | 0.0 - 1.0 mg/dL |
Nitrate | Negative |
Leukocyte Esterase | Negative |
CBC | Adult Male | Adult Female | Adult Female 10^3/uL | Adult Female % |
|---|---|---|---|---|
WBC
| 3.5-10.5 10³/uL | 3.5-10.5 10³/uL | ||
RBC
| 4.32-5.72 10⁶/uL | 3.9-5.03 10⁶/uL | ||
HGB | 13.5-17.5 g/dL | 12.0-15.5 g/dL | ||
HCT | 38.8-50.0% | 34.9-44.5% | ||
MCV | 81.2-95.1 fL | 81.6-98.3fL | ||
MCH | 27-35 pg | 27-35 pg | ||
MCHC | 31-36 g/dL
| 31-36 g/dL
| ||
RDW | 11.8-15.6% | 11.9-15.5%
| ||
PLT | 150-450 10³/uL | 150-450 10³/uL
| ||
Differential | Adult Male 10³/uL | Adult Male %
| ||
Neutrophils | 1.7-7.0 | 55-70
| 1.7-7.0
| 55-70 |
Lymphocytes | 0.9-2.9 | 20-40
| 0.9-2.9
| 20-40 |
CBC | Adult Male | Adult Female |
|---|---|---|
WBC | 3.5-10.5 10³/uL | 3.5-10.5 10³/uL |
RBC | 4.32-5.72 10⁶/uL | 3.9-5.03 10⁶/uL |
HGB | 13.5-17.5 g/dL | 12.0-15.5 g/dL |
HCT | 38.8-50.0 % | 34.9-44.5% |
MCV | 81.2-95.1 fL | 81.6-98.3 fL |
MCH | 27-35 pg | 27-35 pg |
MCHC | 31-36 g/dL | 31-36 g/dL |
RDW | 11.8-15.6 % | 11.9-15.5% |
PLT | 150-450 10³/uL | 150-450 10³/uL |
Test | Adult Male | Adult Female |
|---|---|---|
ESR | 0-10 mm/hr | 0-20 mm/hr |
CBC | Adult Male | Adult Female |
|---|---|---|
HGB | 13.5-17.5 g/dL | 12.0-15.5 g/dL |
HCT | 38.8-50.0% | 34.9-44.5% |
Test | Adult Male | Adult Female |
|---|---|---|
Reticulocyte Count | 0.0216 – 0.0858 10^6/uL | 0.0195 – 0.0755 10^6/uL |
Testing Description
State Reportable Infection
Pediatric Range
Test Code
P-VHL-9005
Performed
Monday-Friday
Contacts
Vibra Health Laboratory
1307- A, Allen Dr
Troy, MI 48083
(248) 846-0663
Last Updated
3/31/26 v.1